MHD Flasher N54 vs Boop
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
MHD Flasher N54
This utility app allows reading and clearing engine DTC error codes, graphing and analyzing datalogs, and viewing vehicle licenses. It serves as a transition to a unified app supporting a wider range of BMW and Supra models.
- Read engine DTC error codes
- Clear engine DTC error codes
- Graph datalogs
- Analyze datalogs
- View vehicle licenses
- Access user guide
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This app is being retired. Please switch to our unified "MHD Flasher" app which now supports all E/F/G series vehicles / engines as well as Supra. This app will remain as a shell to help you switch over. Additionally, some functionality will remain to read and clear engine DTC error codes, graph and analyze your prior datalogs, view your existing vehicle licenses, and access the user guide!
Boop
Access a vast library of Japanese text faces and emoticons directly from your keyboard. Easily find and insert kaomoji sorted by mood or searchable by keyword, with no need for copy-pasting.
- Extensive kaomoji library
- Keyboard integration
- Mood-based sorting
- Keyword search
- Customizable saved faces
- Offline functionality
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Boop is a kaomoji keyboard for iPhone: 24,563 cute Japanese text faces and emoticons, sorted by mood, searchable in a tap, and ready in every app you type in. EVERY FACE, ONE TAP AWAY Boop lives in your keyboard, so the faces come with you. Chats, DMs, notes, email, comments, anywhere there is a text field. Tap a face and it lands in your text. No copy and paste. SORTED BY MOOD 37 moods. Happy, love, sad, cats, dogs, bears, sleepy, dramatic, table flipping, shrugs, sparkles and more. Browse the mood you are in instead of scrolling one endless list. SEARCH THAT FINDS FACES Type happy, bear, angry, shrug or cat and get the faces that match, instantly, on a keyboard that feels like the real one. The whole library is indexed and searched on your phone. SAVE THE ONES YOU USE Press and hold a face to save it. Saved faces ride at the front of the keyboard, and they show up in the app too. BUILT TO FEEL FAST The library ships inside the app as a local database, so opening the keyboard, switching moods and searching never wait on anything. FREE, AND ACTUALLY FREE No ads. No accounts. No subscriptions. No analytics. No network code at all. ABOUT FULL ACCESS iOS asks for Full Access before any third-party keyboard can do more than type. Boop uses it for two things: keeping your saved faces in sync with the app, and haptic feedback when you tap a key. Boop has no network code, so nothing you type can leave your phone, ever. The keyboard works without Full Access too, you just lose sync and haptics. Kaomoji, emoticons, Japanese emoji, text faces, lenny faces, ASCII faces, whatever you call them. They are all in here.
Screenshots
Verdict
The clearest difference is rating: Boop at 5.0 against MHD Flasher N54's 4.6. Boop also leads on update cadence (weekly vs monthly) and review sentiment (100% vs 77%). MHD Flasher N54's advantage is ratings volume (175 vs 1) and iOS requirement (10.2 vs 17.0). On price, ads, in-app purchases and monetization model 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Boop holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: MHD Flasher N54 has 175 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 77% of MHD Flasher N54's written reviews are positive against 100% of Boop's.
MHD Flasher N54 ships an update monthly, Boop weekly. The most recent releases landed on November 2, 2026 and October 31, 2026 respectively.
| Parameter | MHD Flasher N54 | Boop |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (175 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 76.8% of reviews | 100.0% of reviews — better |
| Number of ratings | 175 — better | 1 |
| Update frequency | Monthly | Weekly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, Mac |
| Requires iOS | 10.2 — better | 17.0 |
| Further details — not scored | ||
| Size | 134 MB | 19 MB |
| Age rating | 4+ | 9+ |
| Developer | MHD Tuning UG (haftungsbeschraenkt) | Madhav Oberoi |
Customer experience
MHD Flasher N54
Boop
In-app purchases
MHD Flasher N54
No in-app purchases
Boop
No in-app purchases









