# Delta Calc vs Timer on Me

The clearest difference is price: Timer on Me at Free against Delta Calc's $0.99. Timer on Me also leads on ratings volume (7 vs 2). Delta Calc's advantage is rating (5.0 vs 4.4) and update cadence (every 3 days vs every 2 weeks). On ads, in-app purchases and device support there is nothing between them.

Timer on Me is free to download; Delta Calc costs $0.99 up front. Delta Calc sells 3 in-app purchases, starting at $0.99 per month and Timer on Me sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Delta Calc holds the better App Store score, 5.0 against 4.4. Both are backed by a comparable volume of ratings — 2 and 7 respectively.

Delta Calc ships an update every 3 days, Timer on Me every 2 weeks. The most recent releases landed on June 1, 2026 and September 14, 2026 respectively.

## The numbers

| Metric | Delta Calc | Timer on Me |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/delta-calc/id6504148868/reviews)** | [4.4 (7 ratings)](https://appshunter.io/ios/app/timer-on-me/id6746874284/reviews) |
| Number of ratings | 2 | **7** |
| Positive reviews | — | 66.7% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 3 days** | Every 2 weeks |
| Monetization | Paid | **Free** |
| Size | 2 MB | 9 MB |
| Requires iOS | **17.6** | 26.0 |
| Devices | iPhone, iPad | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 9+ |
| Developer | [Stephen Coffey](https://appshunter.io/developer/1723308273) | [Weiren Hsiao](https://appshunter.io/developer/1814981798) |

## What reviewers say

### Delta Calc

[App page](https://appshunter.io/ios/app/delta-calc/id6504148868)

Quickly calculate percent changes, discounts, and financial gains without complex math. Solve for any of the three values in the percent change formula with an intuitive interface and fun animations.

**Highlights:** Calculate percent changes, Solve for any variable in the formula, Customizable decimal places, Haptic feedback, Fun animations, Adjustable keyboard buttons

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Delta Calc Monthly | $0.99 | per month |
| Delta Calc Yearly | $4.99 | per year |
| Delta Calc Lifetime | $9.99 | one-time |


### Timer on Me

[App page](https://appshunter.io/ios/app/timer-on-me/id6746874284)

This app offers a versatile multi-timer and stopwatch solution for various activities. It features dedicated interval modes for workouts, allows for numerous simultaneous timers, and provides visual progress cues. Save, share, and customize your timing sessions with ease.

**Highlights:** Dedicated workout interval modes (Tabata, EMOM, 30/30), Up to 50 independent timers and stopwatches, Auto-repeat timers, Visual progress bars with color cues, Customizable timer names and reordering, Save and share timer sessions, Keep device on mode

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| More Alarms | $0.99 | one-time |


## Frequently asked questions

### Is Delta Calc free?

Delta Calc costs $0.99, and also offers in-app purchases.

### Is Timer on Me free?

Timer on Me is free to download, with in-app purchases available.

### Which has better reviews, Delta Calc or Timer on Me?

Delta Calc is rated higher. Delta Calc averages 5.0 out of 5 from 2 ratings, while Timer on Me averages 4.4 from 7 ratings.

### Do Delta Calc or Timer on Me have ads?

Neither Delta Calc nor Timer on Me shows ads.

### Which is updated more often, Delta Calc or Timer on Me?

Delta Calc ships an update every 3 days, and Timer on Me every 2 weeks. Most recently, Delta Calc was updated on June 1, 2026 and Timer on Me on September 14, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*