Comparison

Halo vs Arc Timeline 4

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • Habit tracking
  • AI coaching
  • Science-backed protocols
  • Momentum building
  • Lasting change
Features
Read full description

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

About

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.

Highlights
  • 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
Features
Read full description

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

Halo4 screens
Arc Timeline 44 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

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.

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly weekly. The most recent releases landed on September 9, 2026 and September 27, 2026 respectively.

Scorecard3 real differences · 7 level
Halo versus Arc Timeline 4: the parameters behind the verdict, then further details
ParameterHaloArc Timeline 4
PriceFreeFree
Rating4.8 (112 ratings) — better3.9 (23 ratings)
Positive reviews57.9% of reviews60.5% of reviews — better
Number of ratings112 — better23
Update frequencyWeeklyWeekly
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhoneiPhone
Requires iOS18.0 — better26.0
Further details — not scored
Size98 MB64 MB
Age rating17+4+
DeveloperDig Wells, Inc.Matthew Bruce Greenfield

Customer experience

Halo

All ratings112 ratings
Positive95.5%
Neutral0.0%
Negative4.5%
Written reviews19 reviews
Positive57.9%
Neutral10.5%
Negative31.6%

Arc Timeline 4

All ratings23 ratings
Positive69.6%
Neutral0.0%
Negative30.4%
Written reviews38 reviews
Positive60.5%
Neutral5.3%
Negative34.2%

In-app purchases

8 purchases

Halo

Subscriptions8
  • Halo Pro$2.997 Days
  • Halo Pro$12.991 Month
  • Halo Pro$19.991 Month
Show 5 more
  • 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
3 purchases

Arc Timeline 4

Subscriptions2
  • Monthly Subscription7 Days trial$4.991 Month
  • Yearly Subscription7 Days trial$44.991 Year
One-time1
  • Lifetime Purchase$179.99

Questions

Is Halo free?
Halo is free to download, with in-app purchases available.
Is Arc Timeline 4 free?
Arc Timeline 4 is free to download, with in-app purchases available.
Which has better reviews, Halo or Arc Timeline 4?
Halo is rated higher. Halo averages 4.8 out of 5 from 112 ratings, while Arc Timeline 4 averages 3.9 from 23 ratings.
Do Halo or Arc Timeline 4 have ads?
Neither Halo nor Arc Timeline 4 shows ads.
Which is updated more often, Halo or Arc Timeline 4?
Halo ships an update weekly, and Arc Timeline 4 weekly. Most recently, Halo was updated on September 9, 2026 and Arc Timeline 4 on September 27, 2026.

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