Halo vs Arc Timeline 4
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Halo
Build lasting habits with powerful tracking and AI-powered coaching. This app uses science-backed methods to help you create momentum and achieve your goals.
- Habit tracking
- AI coaching
- Science-backed protocols
- Momentum building
- Lasting change
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Halo is a new app that combines powerful habit tracking, AI coaching, and science-backed protocols to help you build unstoppable momentum and lasting change. Terms of Use: https://infinite-api.fly.dev/terms Privacy Policy: https://infinite-api.fly.dev/privacy
Arc Timeline 4
This app automatically tracks your location history, including how you travel and how long you stay at places. It learns your habits to provide a detailed, searchable timeline of your daily life, offering insights into your activity and health metrics.
- Automatic background location recording
- Smart learning engine for place recognition
- Detects over 20 activity types
- Searchable trip and place history
- Health and activity insights (heart rate, calories)
- Data stored on device with optional iCloud backup
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Arc Timeline automatically records where you go, how you get there, and how long you stay - all in the background, with no buttons to press. A smart learning engine gets more accurate the more you use it, building a detailed, searchable timeline of your daily life. Your trips, your places, your history - recorded effortlessly. WHAT ARC TIMELINE DOES ▸ Automatically detects and records your visits and trips ▸ Learns your places and recognises them by name ▸ Detects walking, running, cycling, driving, train, bus, airplane, and 20+ more activity types ▸ A learning engine that improves over time, personalised to you ▸ Search your entire history - find any place, any trip, any day BUILT FOR QUALITY ▸ High quality GPS data with advanced Kalman filtering ▸ Reliable background recording with intelligent sleep mode ▸ Built for iOS 26 with Liquid Glass design ▸ Full dark mode support YOUR DATA, YOUR DEVICE ▸ All data stored on your device ▸ Optional iCloud backup to your private iCloud account ▸ No accounts, no sign-ups, no data shared with third parties ▸ Export your data anytime in standard JSON format HEALTH & ACTIVITY INSIGHTS ▸ Heart rate, calories burned, steps, and altitude for every trip and visit ▸ Import workouts from Apple Health ▸ Sync visits to your calendar ▸ Places tab with visit history, occupancy charts, and geographic reports A free trial is included. An active subscription or lifetime purchase is required after the trial period. Terms of Use (EULA): https://www.bigpaua.com/arcapp/terms
Screenshots
Verdict
The clearest difference is rating: Halo at 4.8 against Arc Timeline 4's 3.9. Halo also leads on ratings volume (112 vs 23) and iOS requirement (18.0 vs 26.0). On price, review sentiment, update cadence and ads there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Halo sells 8 in-app purchases, starting at $2.99 per 7 days and Arc Timeline 4 sells 3 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.
Halo holds the better App Store score, 4.8 against 3.9. Both are backed by a comparable volume of ratings — 112 and 23 respectively. Written reviews complicate that: 58% of Halo's written reviews are positive against 61% of Arc Timeline 4's, so the app with the better star average is not the one people write more warmly about.
Both ship on a similar rhythm, roughly weekly. The most recent releases landed on September 9, 2026 and September 27, 2026 respectively.
| Parameter | Halo | Arc Timeline 4 |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (112 ratings) — better | 3.9 (23 ratings) |
| Positive reviews | 57.9% of reviews | 60.5% of reviews — better |
| Number of ratings | 112 — better | 23 |
| Update frequency | Weekly | Weekly |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone | iPhone |
| Requires iOS | 18.0 — better | 26.0 |
| Further details — not scored | ||
| Size | 98 MB | 64 MB |
| Age rating | 17+ | 4+ |
| Developer | Dig Wells, Inc. | Matthew Bruce Greenfield |
Customer experience
Halo
Arc Timeline 4
In-app purchases
Halo
- Halo Pro$2.997 Days
- Halo Pro$12.991 Month
- Halo Pro$19.991 Month
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- Halo Pro1 Year trial$59.991 Year
- Halo Pro7 Days trial$59.991 Year
- Halo Pro$59.991 Year
- Halo Pro7 Days trial$69.991 Year
- Halo Pro1 Year trial$69.991 Year
Arc Timeline 4
- Monthly Subscription7 Days trial$4.991 Month
- Yearly Subscription7 Days trial$44.991 Year
- Lifetime Purchase$179.99









