TDAH'elp vs InvaderQuest
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
TDAH'elp
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TDAH'elp l'application qui t'aide au quotidien Tu n'arrives pas à faire des tâches simple au quotidien? Être challenger pour les faire peut t'aider? TDAH'elp est là pour toi. Elle te permet d'avoir des rappels pour faire des choses essentiels mais qui peuvent être compliqué. Tu crées une liste de tâche que tu dois faire en les piochant au hazard. Le tout de façon simple et ludique. En bonus, pour te défouler, fixe une durée et tape sur un point aléatoire, gagne des point et bas ton record.
InvaderQuest
Discover and track unique street art mosaics hidden in cities worldwide. Plan your routes to find them efficiently, get alerts when you're near, and monitor your collection's progress with detailed statistics and achievements. This app turns urban exploration into an engaging treasure hunt.
- Map of nearby mosaics
- Route planning for hunts
- Optimized loop routes
- Proximity alerts
- Collection tracking
- Progress statistics
- News updates on mosaics
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InvaderQuest - become the best Space Invaders hunter! You know those little pixel art mosaics tucked away on the walls of your city? For years they have been hiding in plain sight. InvaderQuest turns you into a hunter: spot them, plan your outings, and watch your collection grow - in Paris and in more than 80 cities around the world. FIND THEM A map shows every Invader around you. Each mosaic has its own page: a location hint and a link to photos, so you can spot even the most discreet ones. By default the map only shows what you still have to flash - no distraction, just your next target. PLAN YOUR HUNTS No more wandering at random: 1. Route - enter a start and a finish, and discover every Invader along your way. 2. Hunt - just say "I have an hour, around here", and the app builds an optimised loop to flash as many as possible in the time you have. 3. Walk alerts - get notified when you pass close to an Invader, even with the phone in your pocket and the app closed. DISCOVER THE CITY ALONG THE WAY Your routes and your hunts also take in what is worth seeing nearby: monuments, squares, gardens, artworks. More than 1,700 documented places, each with a summary of its history. The best finds are the ones you were not looking for. YOUR COLLECTION Every catch joins your Collection: its photo, its date, its points. Write a note beside each one to remember where it was, and who you were with. A grid that fills up, city by city. TRACK YOUR PROGRESS 1. Cities - your completion city by city and, in Paris, district by district. Those bars filling up are dangerously addictive. 2. Stats - your activity over time, your streaks, your records. 3. News - new Invaders, mosaics reactivated or gone, in the cities you care about. ARRIVING WITH A HISTORY? Bring in all your flashes at once from your FlashInvaders account, or from a .csv or .txt file. And you can export the whole thing again to switch phones without losing anything. BUILT FOR HUNTERS No account, no server: your flashes, your notes and your locations never leave your phone. A carefully crafted arcade style interface, in French, English, Spanish and Italian. Whether you are a Sunday stroller or a relentless collector, InvaderQuest is with you from the first mosaic to the last. The city is your playground. Now go flash them all! Unofficial app, not affiliated with any artist or brand.
Screenshots
Verdict
The clearest difference is update cadence: InvaderQuest at every 2 weeks against TDAH'elp's every 6 months. TDAH'elp's advantage is iOS requirement (13.0 vs 15.1). On price, ads, in-app purchases and device support 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.
TDAH'elp ships an update every 6 months, InvaderQuest every 2 weeks. The most recent releases landed on September 26, 2026 and October 12, 2026 respectively.
| Parameter | TDAH'elp | InvaderQuest |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (2 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 2 — better |
| Update frequency | Every 6 months | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 13.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 78 MB | 47 MB |
| Age rating | 4+ | 4+ |
| Developer | Marie Guehl | Marc-Henri Colson |
In-app purchases
TDAH'elp
No in-app purchases
InvaderQuest
No in-app purchases









