# TwinKey vs FuelAtom

The clearest difference is update cadence: FuelAtom at daily against TwinKey's every 6 weeks. TwinKey's advantage is device support (3 vs 1) and iOS requirement (15.0 vs 17.0). On price, rating, review sentiment and ratings volume there is nothing between them.

Both are free to download. TwinKey sells 6 one-off in-app purchases and FuelAtom sells 3 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 5.0 for TwinKey against 5.0 for FuelAtom. Both are backed by a comparable volume of ratings — 1 and 1 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

TwinKey ships an update every 6 weeks, FuelAtom daily. The most recent releases landed on September 22, 2026 and June 10, 2026 respectively.

## The numbers

| Metric | TwinKey | FuelAtom |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/twinkey-two-factor-security/id6450484235/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/fuelatom-gas-tracker/id6504491868/reviews) |
| Number of ratings | 1 | 1 |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Daily** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 10 MB | 6 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPod, Mac** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [Artem Bolotov](https://appshunter.io/developer/901756576) | [Elvijs Babcuks](https://appshunter.io/developer/1728902260) |

## What reviewers say

### TwinKey

[App page](https://appshunter.io/ios/app/twinkey-two-factor-security/id6450484235)

This app securely stores and manages your authentication codes for two-factor authentication. It offers easy setup through QR code scanning or manual entry, with options to migrate from other authenticator apps and perform backups. The interface is designed for simplicity and efficiency.

**Highlights:** Secure data storage in Keychain, Easy account setup via QR code or manual entry, Migration from Google Authenticator, Full or partial backup and restore, Simple, efficient user interface

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Support the Developer — Small | $0.99 | one-time |
| Support the Developer — Medium | $0.99 | one-time |
| Support the Developer — Light | $0.99 | one-time |
| Support the Developer | $5.99 | one-time |
| Support the Developer — Large | $9.99 | one-time |
| Support the Developer — Extra | $59.99 | one-time |


### FuelAtom

[App page](https://appshunter.io/ios/app/fuelatom-gas-tracker/id6504491868)

Easily track fuel fill-ups, monitor expenses, and gain insights into vehicle performance for one or multiple vehicles. Optimize fuel usage and reduce costs with detailed logs and comprehensive statistics.

**Highlights:** Track multiple vehicles, Detailed fuel logs, Comprehensive statistics, Fuel efficiency monitoring, Expense tracking, Vehicle performance insights

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $1.99 | per month |
| Yearly | $9.99 | per year |
| FuelAtom Premium | $19.99 | one-time |


## Frequently asked questions

### Is TwinKey free?

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

### Is FuelAtom free?

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

### Which has better reviews, TwinKey or FuelAtom?

TwinKey and FuelAtom are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.

### Do TwinKey or FuelAtom have ads?

Neither TwinKey nor FuelAtom shows ads.

### Which is updated more often, TwinKey or FuelAtom?

TwinKey ships an update every 6 weeks, and FuelAtom daily. Most recently, TwinKey was updated on September 22, 2026 and FuelAtom on June 10, 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.*