TimerZ vs Molar Mass Calculator Pro
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
TimerZ
This utility app allows users to set multiple countdown timers simultaneously, with options for custom alarms, background operation, and history logging. It offers advanced features like chained timers and Dropbox integration for saving and loading data.
- Multiple simultaneous timers
- Background operation
- Customizable alarms and sounds
- Timer chaining and looping
- Activity history logging
- Dropbox integration
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Why did we create another timer app when there are already dozens in the App Store? Because “Timer Z is the Last Timer You’ll Ever Need”! It's simple to use yet full featured. For example, you can easily set a timer to give a 15 seconds warning before another alarming at 1 minute mark. Some unique features of Timer Z are: - A simple count down timer can be set and started with just 3 taps - Multiple timers can be set and can run simultaneously - The timer will fire even if the Timer Z app is running in the background - Each timer can be named and set to expire after a time interval, or at a specific point in time like an alarm - While a timer is running, it can show remaining time or elapsed time since start, either in full hour/min/sec or just seconds - Background graphics shows the percent of time remaining - A running timer can be paused and resumed to continue where it left off - When a timer expires, there is a choice of alarm sounds, vibration, or no sound at all - Optionally the alarm can continue to sound until acknowledged - Upon expiration, a timer can start another timer, including itself in a loop - Timer activity history is saved and can be emailed, great for record keeping - Timer data can be saved and loaded from a linked Dropbox account Whether you’re looking for a simple timer, or one with all the bells-and-whistles, Timer Z is the best choice! NOTE: this version is limited to 2 timers. Use the convenient in-app purchase of Pro feature to add an unlimited number of timers, and eliminate all advertisements. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Molar Mass Calculator Pro
Easily calculate the molar mass of chemical compounds by simply entering the formula. This app offers instant, efficient, and intuitive calculations with a beautiful user interface, making it ideal for students.
- Molar mass calculation
- Formula input
- Instant results
- Efficient processing
- Simple interface
- Beautiful UI
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A must-have for students !!! This application calculates for you the molar mass of a chemical compound. Just enter your formula. Features: -Modern -Instant calculation -Efficient -Simple -Beautiful user interface -Intuitive
Screenshots
Verdict
The clearest difference is price: TimerZ at Free against Molar Mass Calculator Pro's $2.99. TimerZ also leads on update cadence (every 3 months vs every 17 months). Molar Mass Calculator Pro's advantage is review sentiment (100% vs 60%) and in-app purchases (none vs 2). On rating, ratings volume, ads and device support 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
TimerZ is free to download; Molar Mass Calculator Pro costs $2.99 up front. TimerZ sells 2 in-app purchases, starting at $0.99 per month. Molar Mass Calculator Pro asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 4.7 for TimerZ against 4.8 for Molar Mass Calculator Pro. Both are backed by a comparable volume of ratings — 10 and 6 respectively. Written reviews are what separate them: 60% of TimerZ's written reviews are positive against 100% of Molar Mass Calculator Pro's.
TimerZ ships an update every 3 months, Molar Mass Calculator Pro every 17 months. The most recent releases landed on July 9, 2026 and September 10, 2026 respectively.
| Parameter | TimerZ | Molar Mass Calculator Pro |
|---|---|---|
| Price | Free — better | $2.99 |
| Rating | 4.7 (10 ratings) | 4.8 (6 ratings) — better |
| Positive reviews | 60.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 10 — better | 6 |
| Update frequency | Every 3 months — better | Every 17 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Best chart rank | — | #195 — better |
| Devices | iPhone, iPad, Apple TV | iPhone, iPad, iPod, Apple Watch — better |
| Requires iOS | 18.6 | 15.4 — better |
| Further details — not scored | ||
| Size | 65 MB | 7 MB |
| Age rating | 4+ | 4+ |
| Developer | Squawk Studio, LLC | Pylyp Chernov |
Customer experience
TimerZ
Molar Mass Calculator Pro
In-app purchases
TimerZ
- Pro Monthly$0.991 Month
- Timer Z Pro$4.99
Molar Mass Calculator Pro
No in-app purchases





