Chronometer and Countdown HD vs Conversion Calculator Units
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Chronometer and Countdown HD
This utility app transforms your iPad into a versatile multi-stopwatch and multi-countdown timer. It's ideal for timing sporting events, athletic training, or motor racing, allowing simultaneous use of multiple timers and lap measurements.
- 4 independent stopwatches
- Lap timing for up to 8 events
- 4 independent countdown timers
- Adjustable countdown times
- Synchronization buttons
- Background operation
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"Chronometer and Countdown HD" turns your iPad into a multi-stopwatch / multi-countdown timer. Useful in sporting competitions or during athletic training to measure athletic performance, in motor racing and wherever it is necessary to use one or more stopwatches / countdown (simultaneously). Features: - 4 independent chronometer (You can use them simultaneously together with the 4 countdowns) - Interruption and resumption of the stopwatches counting (independently one from another) - "Lap" for measuring the arrival of two subsequent events for each chronometer (total of 8 events simultaneously) - 4 countdown (independent and simultaneously) with remaining time adjustable (using the numeric keypad of the device) - synchronization buttons for all stopwatches and for all countdowns - chronometers and countdowns active even when the application is in the background
Conversion Calculator Units
This app offers a simple and powerful way to convert between over 140 units across 12 categories. Easily switch between units, customize your experience with themes, and share your results.
- Converts over 140 units
- Supports 12 conversion categories
- Customizable themes
- Drag and set unit positions
- Add units to favorites
- Share converted units via email
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* Handy Conversion Calculator App For 12 Categories & 140+ Units * Simple, Powerful & Conversion Calculator app designed for iPhone and iPad! Just tap and convert any units with its clean interface and user-friendly navigation. Simple swipe actions will allow you to convert quickly and change conversion options easily for additional convenience. Download the fastest & easiest to use converter app today! Conversions from one unit to another unit no longer have to be confusing, simply use Best Unit Converter today. * Features: - Ability To Change Themes - Drag & Set Position Of Units - Add Units To Favorites Section - Restore Category Listing - Enable/Disable Units - Set Decimal Digit Count - Share Converted Units by Email ** Conversion (12 Categories & 140+ Units): - Area - Length - Energy - Volume - Weight - Power - Speed - Time - Number - Temperature - Data Storage - Fuel Consumption Conversion Calculator is a beautifully designed universal app, designed for both iPhone & iPad. Get the best easy to use metric and units converter for length, number, power, speed, temperature, time, weight, area, energy, and other popular measurement converters tool. Download free. ************************************************************* * Download Conversion Calculator Today! * * Be Sure To Checkout Other Popular Utilities & Games From RV AppStudios! * *************************************************************
Screenshots
Verdict
The clearest difference is review sentiment: Conversion Calculator Units at 82% against Chronometer and Countdown HD's 0%. Conversion Calculator Units also leads on price (Free vs $0.99) and rating (4.7 vs 2.0). Chronometer and Countdown HD's advantage is in-app purchases (none vs 1) and ads (none vs shown).
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Conversion Calculator Units is free to download; Chronometer and Countdown HD costs $0.99 up front. Conversion Calculator Units sells 1 one-off in-app purchase. Chronometer and Countdown HD asks for nothing beyond the download.
Conversion Calculator Units holds the better App Store score, 4.7 against 2.0. That said, the two scores are not equally well evidenced: Conversion Calculator Units has 5K ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 0% of Chronometer and Countdown HD's written reviews are positive against 82% of Conversion Calculator Units's.
Chronometer and Countdown HD ships an update every 42 months, Conversion Calculator Units every 2 months. The most recent releases landed on September 14, 2026 and October 2, 2026 respectively.
| Parameter | Chronometer and Countdown HD | Conversion Calculator Units |
|---|---|---|
| Price | $0.99 | Free — better |
| Rating | 2.0 (1 ratings) | 4.7 (5K ratings) — better |
| Positive reviews | 0.0% of reviews | 82.1% of reviews — better |
| Number of ratings | 1 | 5K — better |
| Update frequency | Every 42 months | Every 2 months — better |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Monetization | Paid | Free with in-app purchases — better |
| Devices | iPad | iPhone, iPad, iPod — better |
| Requires iOS | 18.0 | 15.0 — better |
| Further details — not scored | ||
| Size | 3 MB | 41 MB |
| Age rating | 4+ | 4+ |
| Developer | Gianluca Natalini | RV AppStudios LLC |
Customer experience
Chronometer and Countdown HD
Conversion Calculator Units
Bugs and requests
Chronometer and Countdown HD
Not enough reviews yet to summarise bugs or requests.
Conversion Calculator Units
Reported bugs
2 issues- Ads not removed after purchase
- Incorrect unit conversions
Requested features
4 requests- Add pressure conversion units
- Include a basic calculator function
- Implement multi-language support
- Allow customization of unit order
In-app purchases
Chronometer and Countdown HD
No in-app purchases
Conversion Calculator Units
- Remove Ads$1.99
Questions
Is Chronometer and Countdown HD free?
Is Conversion Calculator Units free?
Which has better reviews, Chronometer and Countdown HD or Conversion Calculator Units?
Do Chronometer and Countdown HD or Conversion Calculator Units have ads?
Which is updated more often, Chronometer and Countdown HD or Conversion Calculator Units?
Other comparisons
