iHorology vs Chronographer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
iHorology
This app simulates the functions of a mechanical watch on your phone or tablet. It offers a wide range of features found in real-world timepieces, including chronographs, calendars, and chiming functions. Experience the complexity of mechanical watches with customizable options.
- Chronograph functions (split, flyback, monopusher)
- Perpetual and annual calendars
- Minute repeaters and chiming features
- Customizable bezel options
- GMT, alarm, and moonphase complications
- Power reserve simulation
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iHorology is the world’s first (and best) mechanical watch for your phone / tablet. Experience all the functions of mechanical watches. Features include ► Chronographs - split, flyback, monopusher etc ► Perpetual / annual calendars ► Minute repeaters ► Bezel options - dive, tachymeter etc ► GMT, alarm, moonphase etc ► Custom beats, hacking, deadbeat seconds etc ► Power reserve - manual / unlimited ► Chiming features - minutes repeater, decimal minute repeater, striking time etc ► Analog alarm ► Choice of inaccuracy, with type of tourbillon etc Designed to be used as an actual mechanical watch on your phone.
Chronographer
This app helps you meticulously track the accuracy of your mechanical watches. It records time differences, calculates detailed performance metrics, and visualizes trends with charts and histograms. You can also manage your watch collection, log daily wear, and analyze positional variations.
- Track mechanical watch accuracy
- Calculate detailed performance metrics
- Visualize accuracy with charts and histograms
- Manage watch collection with notes and photos
- Log daily watch wear
- Analyze positional variation
- Export watch data
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Chronographer is for people who enjoy mechanical watches. It does two things: 1. Tracks your watches’ long-term accuracy 2. Records wrist time Chronographer can work with your whole watch collection. Create a “card” for each watch, giving it a name and, optionally, a longer description. Select a picture from your Photos library and add additional notes, such as the watch’s specifications, purchase details, and service history. All information is stored in iCloud and automatically synchronized between your devices. To track a watch’s accuracy, periodically collect data points comparing its indicated time to the current correct time. Chronographer tracks offsets (the difference from the correct time) and daily rate (how many seconds it gains or loses per day). It uses this information to create graphs and histograms that help you visualize your watch’s performance over time. Chronographer also calculates the following metrics: * Average offset * Max. positive offset * Max. negative offset * Last offset * Net gain/loss * Best-fit rate * Average rate * Fastest rate * Slowest rate * Last rate * Rate variance * Best-fit rate drift You can log the watch (or watches) that you wear each day. Chronographer’s wrist time tracking feature lets you see which watches you wear the most and how long it’s been since you’ve worn each one. You can use Chronographer to identify positional variation. When you record a data point, include the position (dial up, crown up, etc.) that the watch was stored in. Then, you can restrict the charts and metrics to specific positions and compare the results. Chronographer includes a large digital clock to help when you set your watches. For more information, including a detailed user’s guide, see https://www.rmfrance.net/chronographer
Screenshots
Verdict
The clearest difference is rating: iHorology at 4.4 against Chronographer's 3.4. iHorology also leads on iOS requirement (12.0 vs 18.6). On price, review sentiment, ratings volume and update cadence 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. Neither carries in-app purchases, so what you see is what you pay.
iHorology holds the better App Store score, 4.4 against 3.4. Both are backed by a comparable volume of ratings — 5 and 5 respectively. Written reviews split almost evenly too, at 50% and 50% positive.
Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 24, 2026 and October 15, 2026 respectively.
| Parameter | iHorology | Chronographer |
|---|---|---|
| Price | Free | Free |
| Rating | 4.4 (5 ratings) — better | 3.4 (5 ratings) |
| Positive reviews | 50.0% of reviews | 50.0% of reviews |
| Number of ratings | 5 | 5 |
| Update frequency | Every 2 months | Every 2 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 12.0 — better | 18.6 |
| Further details — not scored | ||
| Size | 35 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | Kaizen Writer | Robert France |
Customer experience
iHorology
Chronographer
In-app purchases
iHorology
No in-app purchases
Chronographer
No in-app purchases
Questions
Is iHorology free?
Is Chronographer free?
Which has better reviews, iHorology or Chronographer?
Do iHorology or Chronographer have ads?
Which is updated more often, iHorology or Chronographer?
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