# Arc Editor public beta 20 **URL:** \ **Category:** Announcements\ **Created:** [17 March 2026 05:30 UTC](https://support.bigpaua.com/t/arc-editor-public-beta-20/1115 "2026-03-17T05:30:15Z")\ **Posts on this page:** 20\ **Page:** 1
**Author:** ![matt](https://dub1.discourse-cdn.com/flex013/user_avatar/support.bigpaua.com/matt/32/3_2.png) [@matt](https://support.bigpaua.com/u/matt)\ **Post date:** [17 March 2026 05:30 UTC](https://support.bigpaua.com/t/arc-editor-public-beta-20/1115/1 "2026-03-17T05:30:15Z")
## 1.0 (build 43), 2026-03-17 13:21 (Bali) ### New - Added subscription and purchase system ### Bug Fixes - Fixed activity type model updates stalling indefinitely when many models need updating simultaneously (e.g., after a flight covering many geographic regions), by limiting concurrent model updates (BIG-352) - Fixed app hanging when scanning for available backups during onboarding, by moving file system operations off the main thread (BIG-346) - Fixed app hanging when opening context menus on timeline items, caused by a synchronous system check for installed map apps (BIG-349) - Fixed crash when viewing altitude charts for locations below sea level (BIG-350) - Fixed crash when saving a place edit in certain navigation states (BIG-351) - Fixed navigation not working after saving a new private place created from search results (BIG-354) > **[Join the Arc Timeline Editor beta](https://testflight.apple.com/join/qPKVWXP6)** > > Available on iOS ---
**Author:** ![vogon1](https://avatars.discourse-cdn.com/v4/letter/v/a183cd/32.png) [@vogon1](https://support.bigpaua.com/u/vogon1)\ **Post date:** [17 March 2026 07:31 UTC](https://support.bigpaua.com/t/arc-editor-public-beta-20/1115/2 "2026-03-17T07:31:57Z")
Thank you, I had many hangs lately, hopefully fixed now. Sietse ---
**Author:** ![gsoper](https://avatars.discourse-cdn.com/v4/letter/g/7ba0ec/32.png) [@gsoper](https://support.bigpaua.com/u/gsoper)\ **Post date:** [17 March 2026 09:03 UTC](https://support.bigpaua.com/t/arc-editor-public-beta-20/1115/3 "2026-03-17T09:03:43Z")
I’ve been ignoring the betas but now I fancy a bit of excitement 😉. How exciting is it likely to be? Is there a significant risk of data loss? Is there a summary somewhere of how the different apps relate to each other and how the new app changes things? Thanks in anticipation ---
**Author:** ![twilldre](https://avatars.discourse-cdn.com/v4/letter/t/73ab20/32.png) [@twilldre](https://support.bigpaua.com/u/twilldre)\ **Post date:** [17 March 2026 17:20 UTC](https://support.bigpaua.com/t/arc-editor-public-beta-20/1115/4 "2026-03-17T17:20:54Z")
No rush because I appreciate the work being done as-is, but do you have a sense of when you’ll have the activity maps working? Not a huge deal but I like to occasionally look at my progress for the year on the map and the place dots can obscure some interesting stuff at some zoom levels. On the attached picture I’ve spent some time walking/biking at various places along the train line, but since I spend so much time at different stations on the line, it’s mostly obscured at a glance by the places. Really cool visual most of the time, but sometimes I just like to see how I’ve been moving and nothing else ![IMG_1876](https://europe1.discourse-cdn.com/flex013/uploads/bigpaua/original/2X/d/dee13847929e7ce92761c27e4966bacbf6063104.jpeg) ---
**Author:** ![matt](https://dub1.discourse-cdn.com/flex013/user_avatar/support.bigpaua.com/matt/32/3_2.png) [@matt](https://support.bigpaua.com/u/matt)\ **Post date:** [18 March 2026 03:59 UTC](https://support.bigpaua.com/t/arc-editor-public-beta-20/1115/5 "2026-03-18T03:59:28Z")
Hi @gsoper! For a full rundown of how Arc Editor relates to Arc Timeline, the initial forum thread goes into detail: [First public beta for Arc Editor!](https://support.bigpaua.com/t/first-public-beta-for-arc-editor/956) Though the short version is: There’s zero risk, zero data loss potential, and the new app is better than the old app in almost all ways. It’s also very close to being final - I’m aiming to ship it to the App Store proper ideally before the end of this month. The new app doesn’t yet have all of the features of the old app - I’m adding them back in in priority order of which ones people mention they’re missing the most. But it’s got enough in there now to be worth switching to entirely. At this point I basically only keep the old app around because it’s my job. Otherwise I’d have deleted it already 😂 The new app is so much better! Oh, though definitely keep the old app around for a little while at least. There’s no need to rush to deleting it or turning it off. The two will run happily side by side - they record to separate databases. ---
**Author:** ![matt](https://dub1.discourse-cdn.com/flex013/user_avatar/support.bigpaua.com/matt/32/3_2.png) [@matt](https://support.bigpaua.com/u/matt)\ **Post date:** [18 March 2026 04:02 UTC](https://support.bigpaua.com/t/arc-editor-public-beta-20/1115/6 "2026-03-18T04:02:35Z")
> [@twilldre](#): > > No rush because I appreciate the work being done as-is, but do you have a sense of when you’ll have the activity maps working? Now that you’ve asked, I’ll up the priority of that task 😂 I’m prioritising adding features from the old app based on how often they get asked for. Though for what you’re asking… I’m thinking the old per-activity map views in the old app aren’t necessarily exactly right. I mean, they’d do the job, but the fact that they’re only per-activity is a bit limiting. So I’m almost thinking a better fit would be the feature idea of … map toggles. Like, when the content sheet is slid down there could be some tools/toggles visible on the map that let you turn on and off different kinds of map content, to filter the view to just the kinds of things you want to see. I’ll make sure I’ve got the right tasks filed in the task tracking system, so that I’m tracking all this and prioritising. But yeah for the per-activity views, I’m loosely thinking those should be in the next major update, so v1.1. And the map toggles feature idea… I’d _like_ to get that into 1.1 also, but we’ll have to see how things play out. ---
**Author:** ![elucubrator](https://avatars.discourse-cdn.com/v4/letter/e/bc79bd/32.png) [@elucubrator](https://support.bigpaua.com/u/elucubrator)\ **Post date:** [18 March 2026 08:24 UTC](https://support.bigpaua.com/t/arc-editor-public-beta-20/1115/7 "2026-03-18T08:24:28Z")
The subscription requirement seems live? Is that correct. I do want to support you, but don’t want to sign up for a second $70 per year. I might have missed it, bit does Arc Editor have the merge locations function of Arc Timeline? ---
**Author:** ![gsoper](https://avatars.discourse-cdn.com/v4/letter/g/7ba0ec/32.png) [@gsoper](https://support.bigpaua.com/u/gsoper)\ **Post date:** [18 March 2026 11:39 UTC](https://support.bigpaua.com/t/arc-editor-public-beta-20/1115/8 "2026-03-18T11:39:47Z")
I’ve taken the plunge and it’s gone well! My only observation so far of missing something is that it doesn’t tell you the ‘source’ of a place, for example Google or Squarespace. Unless I’m missing something… I like to ensure frequently visited places are from Google, I’m not really sure why I do that! ---
**Author:** ![twilldre](https://avatars.discourse-cdn.com/v4/letter/t/73ab20/32.png) [@twilldre](https://support.bigpaua.com/u/twilldre)\ **Post date:** [18 March 2026 16:15 UTC](https://support.bigpaua.com/t/arc-editor-public-beta-20/1115/9 "2026-03-18T16:15:32Z")
I really like that map toggle idea. Another super minor thing for me, but with that, if you’d be able to toggle certain activities, it would solve the messy airplane line aesthetic. ---
**Author:** ![kronk](https://dub1.discourse-cdn.com/flex013/user_avatar/support.bigpaua.com/kronk/32/1002_2.png) [@kronk](https://support.bigpaua.com/u/kronk)\ **Post date:** [18 March 2026 23:36 UTC](https://support.bigpaua.com/t/arc-editor-public-beta-20/1115/10 "2026-03-18T23:36:48Z")
G’day Matt This update sounds like you fixed a lot of the hang issues; thank you! I haven’t managed to reproduce the full UI hang with this build! So that’s definite progress. But when I update a big activity (like, as you say, a long flight), it still kicks off a ton of simultaneous updates that effectively prevent most of the UI from working. At the moment I have 191 active (3 timeline, 188 activityTypes) running for 10+ minutes, and thus most of the UI doesn’t work (e.g. maps are blank, activity types can’t be selected, etc.) ---
**Author:** ![matt](https://dub1.discourse-cdn.com/flex013/user_avatar/support.bigpaua.com/matt/32/3_2.png) [@matt](https://support.bigpaua.com/u/matt)\ **Post date:** [19 March 2026 02:08 UTC](https://support.bigpaua.com/t/arc-editor-public-beta-20/1115/11 "2026-03-19T02:08:24Z")
> [@elucubrator](#): > > The subscription requirement seems live? Is that correct. I do want to support you, but don’t want to sign up for a second $70 per year. Hi @elucubrator! No need to worry. The “purchases” in the TestFlight builds are fake - all done in the “App Store sandbox”, so no real money is involved. Also the subscriptions for the old app are meant to carry over to the new. No separate purchases or subscriptions required. But it looks like we’ve just spotted a bug in that carry over, which will need fixing. But yeah, regardless of that bug, you can just tap through to do a fake lifetime purchase in the TestFlight build and it’ll stop bugging you, and no money will be spent 👍🏼 > [@elucubrator](#): > > I might have missed it, bit does Arc Editor have the merge locations function of Arc Timeline? Are you meaning the Place Merge feature? For when there’s things like “Bob’s Cafe” and “Bobs Cafe” and they’re the same thing but listed separately? If so, not yet! But now that you’ve asked I’ll up the priority of that feature request. I think it’s slated to land in v1.1, so the first major update after the initial v1.0 release (which is targeted for before the end of this month). ---
**Author:** ![matt](https://dub1.discourse-cdn.com/flex013/user_avatar/support.bigpaua.com/matt/32/3_2.png) [@matt](https://support.bigpaua.com/u/matt)\ **Post date:** [19 March 2026 02:09 UTC](https://support.bigpaua.com/t/arc-editor-public-beta-20/1115/12 "2026-03-19T02:09:38Z")
> [@gsoper](#): > > My only observation so far of missing something is that it doesn’t tell you the ‘source’ of a place, for example Google or Squarespace. Unless I’m missing something… Ah yeah, I think you’re right - it’s not showing the sources. I’ll note that down to get that shown somewhere! ---
**Author:** ![matt](https://dub1.discourse-cdn.com/flex013/user_avatar/support.bigpaua.com/matt/32/3_2.png) [@matt](https://support.bigpaua.com/u/matt)\ **Post date:** [19 March 2026 02:13 UTC](https://support.bigpaua.com/t/arc-editor-public-beta-20/1115/13 "2026-03-19T02:13:18Z")
> [@kronk](#): > > At the moment I have 191 active (3 timeline, 188 activityTypes) running for 10+ minutes Hm. That’s… weird. The fix in the last build was to throttle concurrent model updates to a max of 3. So almost all of those 188 must be… classification tasks, presumably. Curious. Classification tasks are also deduplicated, so… it must be a lot of _different_ classifications. I would’ve thought that’d be a quite rare situation to get into, but clearly you got into it! So it’s not impossible, and possibly easier to get to than I thought. Did you happen to notice what kinds of activityTypes operations they were? Although if I recall right, there is only two: model updates, and classification. But maybe I’m forgetting some others. I’d better check… ---
**Author:** ![kronk](https://dub1.discourse-cdn.com/flex013/user_avatar/support.bigpaua.com/kronk/32/1002_2.png) [@kronk](https://support.bigpaua.com/u/kronk)\ **Post date:** [19 March 2026 08:10 UTC](https://support.bigpaua.com/t/arc-editor-public-beta-20/1115/14 "2026-03-19T08:10:50Z")
The activity types are all the same except the very last one: ![IMG_0007.PNG](https://europe1.discourse-cdn.com/flex013/uploads/bigpaua/original/2X/e/e453829cd3472d1ab47aa2e68027fa5e85d0a8f0.jpeg) ---
**Author:** ![matt](https://dub1.discourse-cdn.com/flex013/user_avatar/support.bigpaua.com/matt/32/3_2.png) [@matt](https://support.bigpaua.com/u/matt)\ **Post date:** [20 March 2026 02:10 UTC](https://support.bigpaua.com/t/arc-editor-public-beta-20/1115/15 "2026-03-20T02:10:14Z")
Eek. Well that’s a case of “should be impossible”. But there it is, screenshot is build 43, and there’s \>3 updateModel() operations. Hmm. There must be another pathway for those to get in there. Though I thought we put the 3 concurrents check at the singular funnel they all have to go through. Clearly I missed something there. Will see what I can find today! ---
**Author:** ![kronk](https://dub1.discourse-cdn.com/flex013/user_avatar/support.bigpaua.com/kronk/32/1002_2.png) [@kronk](https://support.bigpaua.com/u/kronk)\ **Post date:** [20 March 2026 02:49 UTC](https://support.bigpaua.com/t/arc-editor-public-beta-20/1115/16 "2026-03-20T02:49:04Z")
This might be obvious from earlier in the thread, but for the avoidance of doubt: it seems to be quite reliably kicked off by doing something like setting the activity type of a flight. ---
**Author:** ![matt](https://dub1.discourse-cdn.com/flex013/user_avatar/support.bigpaua.com/matt/32/3_2.png) [@matt](https://support.bigpaua.com/u/matt)\ **Post date:** [20 March 2026 03:02 UTC](https://support.bigpaua.com/t/arc-editor-public-beta-20/1115/17 "2026-03-20T03:02:08Z")
Yeah I figured that’d be the worst case scenario. Those cover potentially a whole lot of D2 regions. Oh for interest’s sake: Not sure if you’ve picked up on how the models work or not, but it’s kinda fun. There’s three depths: D2, D1, D0, and classification makes use of potentially all three overlapping. D0 is a single model for the whole world, D1 is city/state sized regions, and D2 is neighbourhood sized regions. So D2 does most of the work, as long as it’s already fleshed out with enough data for that region. If not, then classification is weighted to fall back more on the D1. And if even that’s not well fleshed out, weighting will instead lean most heavily on the global D0. So when you have a flight that’ll cover a whole bunch of D2 regions, thus why it triggers so many model updates. It will usually also cover a handful of D1 regions, depending on how far you flew. In the Debug Info view, under Activity Classifiers, you can see which ones are currently being used for most recent classification. The C numbers are “completeness” and A numbers are “accuracy”. If the D2 is already at 1.0 completeness then it takes the full weight and the D1 and D0 aren’t engaged at all. The BD0 is a fallback “bootstrap” model, for new users with little to no data of their own yet. It’s basically my own CD0 but with the types grouped more simply, to be more generally applicable. Anyway, tangent aside: hopefully I’ll have a new build this afternoon! This gap that these updates are slipping through shouldn’t be too hard to find… ---
**Author:** ![kronk](https://dub1.discourse-cdn.com/flex013/user_avatar/support.bigpaua.com/kronk/32/1002_2.png) [@kronk](https://support.bigpaua.com/u/kronk)\ **Post date:** [20 March 2026 12:57 UTC](https://support.bigpaua.com/t/arc-editor-public-beta-20/1115/18 "2026-03-20T12:57:25Z")
I hadn’t, but that’s cool. Thank you for sharing! My life, insofar as movement is concerned, will be very boring for the next two weeks. So expect many fewer complaints! 😆 ---
**Author:** ![gsoper](https://avatars.discourse-cdn.com/v4/letter/g/7ba0ec/32.png) [@gsoper](https://support.bigpaua.com/u/gsoper)\ **Post date:** [20 March 2026 15:02 UTC](https://support.bigpaua.com/t/arc-editor-public-beta-20/1115/19 "2026-03-20T15:02:40Z")
On the Place Details page, will you be restoring the merge / deduplicate option? Thanks! ---
**Author:** ![matt](https://dub1.discourse-cdn.com/flex013/user_avatar/support.bigpaua.com/matt/32/3_2.png) [@matt](https://support.bigpaua.com/u/matt)\ **Post date:** [21 March 2026 01:44 UTC](https://support.bigpaua.com/t/arc-editor-public-beta-20/1115/20 "2026-03-21T01:44:53Z")
@gsoper The Place Merge feature is slated for the first release after v1.0 goes live. It’s definitely high priority! I want it too. But I’ve had to be brutal about limiting scope for the initial 1.0 release, to make sure I can actually get it shipped this month. But yeah, if all goes to plan it should be landing within weeks of the 1.0 release. Which should land before the end of this month 👍🏼 [Next page](https://support.bigpaua.com/t/arc-editor-public-beta-20/1115.md?page=2)