# Google Smart Lock vs 燃費メモくん

The clearest difference is ads: Google Smart Lock at none against 燃費メモくん's shown. Google Smart Lock also leads on chart position (#140 vs unranked). 燃費メモくん's advantage is update cadence (every 3 weeks vs every 2 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Google Smart Lock ships an update every 2 months, 燃費メモくん every 3 weeks. The most recent releases landed on October 28, 2026 and October 26, 2026 respectively.

## The numbers

| Metric | Google Smart Lock | 燃費メモくん |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.5 (636 ratings)](https://appshunter.io/ios/app/google-smart-lock/id1152066360/reviews)** | — |
| Number of ratings | **636** | — |
| Positive reviews | 10.3% of reviews | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | Free with in-app purchases | — |
| Best chart rank | **#140** | — |
| Size | 56 MB | 32 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Google](https://appshunter.io/developer/281956209) | [HAYATO SUZUKI](https://appshunter.io/developer/1890118485) |

## What reviewers say

### Google Smart Lock

[App page](https://appshunter.io/ios/app/google-smart-lock/id1152066360)

**Currently charting:** #140 Top Free · Utilities (US App Store)

Securely log in to websites and apps using your phone's built-in security key or a physical Bluetooth key. It simplifies access by remembering your passwords and offering a more convenient sign-in experience.

**Highlights:** Use phone as security key, Use Bluetooth security key, Password saving, Simplified sign-in, Secure access

**In-app purchases:** none

**What reviewers like**

- 🚀 Works fine
- 🔒 Adds extra security layer
- 👍 Useful app

**What reviewers complain about**

- 🐛 Crashes on iOS 18 update
- 🐛 Doesn't work with Yubikey
- 🐛 Doesn't work with child accounts
- 🐛 Unreliable, constant issues
- 🐛 Locked out of accounts

**Reported bugs**

- Crashes on launch
- Doesn't detect nearby devices
- Endless login loop
- Incompatible with latest iOS

**Requested features**

- Support for NFC security keys
- Easier setup and usage
- Better compatibility with other devices


### 燃費メモくん

[App page](https://appshunter.io/ios/app/id6814695803)

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

**In-app purchases:** none


## Frequently asked questions

### Is Google Smart Lock free?

Google Smart Lock is free to download, with no in-app purchases.

### Is 燃費メモくん free?

燃費メモくん is free to download, with no in-app purchases.

### Do Google Smart Lock or 燃費メモくん have ads?

燃費メモくん shows ads; Google Smart Lock does not.

### Which is updated more often, Google Smart Lock or 燃費メモくん?

Google Smart Lock ships an update every 2 months, and 燃費メモくん every 3 weeks. Most recently, Google Smart Lock was updated on October 28, 2026 and 燃費メモくん on October 26, 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.*