# CalcVerter vs Charge Countdown

The clearest difference is rating: CalcVerter at 4.5 against Charge Countdown's 2.7. CalcVerter also leads on device support (4 vs 2). Charge Countdown's advantage is update cadence (every 5 days vs monthly). On price, review sentiment, ratings volume and ads there is nothing between them.

Both are free to download. CalcVerter sells 16 in-app purchases, starting at $0.99 per month and Charge Countdown sells 4 in-app purchases, starting at $3.99 per 7 days. Whichever you choose, the download price is not the number that matters.

CalcVerter holds the better App Store score, 4.5 against 2.7. Both are backed by a comparable volume of ratings — 13 and 6 respectively. Written reviews point the same way: 82% of CalcVerter's written reviews are positive against 76% of Charge Countdown's.

CalcVerter ships an update monthly, Charge Countdown every 5 days. The most recent releases landed on August 27, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | CalcVerter | Charge Countdown |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (13 ratings)](https://appshunter.io/ios/app/calcverter/id1006610733/reviews)** | [2.7 (6 ratings)](https://appshunter.io/ios/app/charge-countdown-battery/id6740901010/reviews) |
| Number of ratings | **13** | 6 |
| Positive reviews | **81.8% of reviews** | 76.5% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 5 days** |
| Monetization | Freemium | Free with in-app purchases |
| Size | 161 MB | 5 MB |
| Requires iOS | **17.0** | 18.2 |
| Devices | **iPhone, iPad, Mac, Apple Watch** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [loay setrak](https://appshunter.io/developer/923932983) | [Leonhard Hundschell](https://appshunter.io/developer/1790030562) |

## What reviewers say

### CalcVerter

[App page](https://appshunter.io/ios/app/calcverter/id1006610733)

This comprehensive utility app offers a vast array of tools for calculations, conversions, and scientific exploration. It features customizable calculators, unit and base converters, time zone tools, and a science hub with constants and a periodic table. Personalize your experience with themes, widgets, and advanced statistics.

**Highlights:** Customizable calculators with multiple registers, Extensive unit and base conversion tools, Time zone and date calculation utilities, Science hub with constants and periodic table, Password, UUID, and random number generators, QR code creation and scanning, Advanced statistics and data visualization

**Features:** Family Sharing, Apple Watch app, Vision Pro support

**In-app purchases (16)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 Month Premium | $0.99 | per month |
| 6 Months Premium | $3.99 | per 6 months |
| 1 Year Premium | $6.99 | per year |
| Premium (Previous Purchasers) | Free | one-time |
| Small Tip | $0.99 | one-time |
| Elements Pack | $1.99 | one-time |
| Generators Pack | $1.99 | one-time |
| Date & Time Pack | $1.99 | one-time |
| Developer Pack | $1.99 | one-time |
| Statistics Pack | $1.99 | one-time |
| Theme Pack | $1.99 | one-time |
| Converter Pack | $2.99 | one-time |
| Calculator Pack | $2.99 | one-time |
| Formulas Pack | $2.99 | one-time |
| Enormous Tip | $6.99 | one-time |
| Lifetime Premium | $14.99 | one-time |


### Charge Countdown

[App page](https://appshunter.io/ios/app/charge-countdown-battery/id6740901010)

This app precisely calculates how long your device needs to charge to a specific percentage. It intelligently accounts for charging speed, current battery status, and power consumption to provide an accurate countdown. Optimized for iPhone and iPad, it offers an intuitive and ad-free experience for managing your battery.

**Highlights:** Precise charging time countdown, Intelligent calculation based on charging speed, Optimized for iPhone and iPad, Intuitive and user-friendly design, Offline functionality, No advertising or data tracking

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Charging Countdown - Battery | $3.99 | per 7 days |
| Charge Countdown – 1 Month | $3.99 | per month |
| Charging Countdown – Battery | $5.99 | per year |
| Charge Countdown – Unlimited | $12.99 | one-time |


## Frequently asked questions

### Is CalcVerter free?

CalcVerter is free to download, with in-app purchases available.

### Is Charge Countdown free?

Charge Countdown is free to download, with in-app purchases available.

### Which has better reviews, CalcVerter or Charge Countdown?

CalcVerter is rated higher. CalcVerter averages 4.5 out of 5 from 13 ratings, while Charge Countdown averages 2.7 from 6 ratings.

### Do CalcVerter or Charge Countdown have ads?

Neither CalcVerter nor Charge Countdown shows ads.

### Which is updated more often, CalcVerter or Charge Countdown?

CalcVerter ships an update monthly, and Charge Countdown every 5 days. Most recently, CalcVerter was updated on August 27, 2026 and Charge Countdown on September 22, 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.*