OpenAppLock vs Fourfold
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
OpenAppLock
This app helps you regain control of your screen time by blocking specific applications. You can set schedules, time limits, or open limits for apps, and even create custom rules to prevent unwanted usage.
- Block apps on a schedule
- Set time or open limits
- Preset and custom rules
- Lock rule edits
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Block apps and reclaim your screen time! - Block apps on a schedule, or add a time/open limit - Choose from preset rules, or create your own - Lock rule edits to prevent changes while blocking
Fourfold
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Your Apple Watch can do a hundred things. You do four of them. Then four more. Fourfold gives you a 2x2 grid on your wrist, and you decide what goes in it. A room number. A photo to show someone. A timer for the tea. Four squares, one tap each. Need more? Make another set and swipe to it: eight, twelve, as many as you like with Pro. Set it up on your iPhone, and see what each square does first. Or set it up on the watch. REAL GAMES, WRIST-SIZED Chess, Reversi and Tic-Tac-Toe, against the AI or two people passing the watch. Chess — a wooden set in 3D and the whole game: castling, en passant, promotion, stalemate. Five strengths. Reversi — four strengths, and two players with Pro. Echo — four squares play, you play them back, one longer every time. Tic-Tac-Toe — three in a row. Dice — a glazed die on black glass. Tap or shake to roll. Spinner — your own options on a glass wheel. FOR WHEN THE TALK RUNS DRY Question Gacha — crank the Crown and a capsule cracks open on one of 250 questions, some to get talking and a hundred to think about. Coin Toss — a proof gold coin, sun on one side, moon on the other, tossed for real. Doodle — draw with a finger; the drawing stays on the tile. AND THE ONES THAT DO THE WORK Pomodoro — focus and break on repeat, with clear alerts and the phase on your watch face. Prompter — your talk, flowing to finish on time, page by page, a point at a time, or moved by the Crown. Paste the script on iPhone. Timer — your preset, ready to start, with a tap on the wrist when done. Metronome — a silent beat, tapped on your wrist. Note — a keypad for a room number, and your voice, a finger or the keyboard for words. Longer ones from iPhone. Recorder — one tap, with a light and the time on screen, written out on your iPhone, on the device. Tell the people you are with first. MAKE YOUR OWN MUSIC. LOG YOUR STUDY TIME. Music — want to focus while you study? Blend ambient music to your taste and let it play forever: drag four lights through colour. Study Together — want to log your study time? Study on with a dinosaur keeping time beside you; your iPhone keeps every sitting. Look up at Foldsaur now and then, and have fun. A GOLDFISH BOWL, FOR A QUIET MINUTE Goldfish — for when you need a breather. Six kinds, in bowls of gold leaf, lacquer or glaze. Touch the water and it ripples; the Crown makes them larger or smaller. WORDS WORTH SAVORING Great Words — sayings from people who moved the world, traced to their sources. Turn the card over for why it was said. Fifty are free, all 500 with Pro. Dear & Yours — tap for a new way to open and sign off a work email. Nine hundred pairs, from I hope this finds you well to Best regards. HANDY TO HAVE Spot Pin — pin where you parked, follow the arrow back. On iPhone, see them all on a map. Map — where you are and what's nearby. The Crown zooms. Sun — how long until sunset. Or sunrise. Photo — full screen on your wrist. The Crown zooms. Link — type or say an address; the page brings its own name and picture. Random Number — one to anything, drawn properly. ON YOUR WATCH FACE Add the Fourfold complication and your squares sit on the face, or a running Timer, Pomodoro or study time. NO ACCOUNT, NO SERVER, NO ANALYTICS What you write, record and study stays on your iPhone and Apple Watch, moving directly between them. What goes out: a page you add is asked for its name and picture, map and pin names come from Apple, and a pin you open goes to that maps app. FOURFOLD PRO One purchase, not a subscription: • All eighteen Pro tiles, Study Together, Music, chess and the goldfish among them • All 500 Great Words, and two-player Reversi • Unlimited sets • Tile stacks — up to twelve notes or photos in one square Try all of Pro free for 7 days. Nothing is charged after. Free: one full set of four squares, with notes, photos, links, the Timer, Echo, Dear & Yours, 50 Great Words and Reversi against the watch. Requires iPhone with iOS 17 and Apple Watch with watchOS 10.
Screenshots
Verdict
The clearest difference is in-app purchases: OpenAppLock at none against Fourfold's 2. Fourfold's advantage is iOS requirement (17.0 vs 26.0). On price, update cadence, ads 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. Fourfold sells 2 one-off in-app purchases. OpenAppLock asks for nothing beyond the download.
OpenAppLock ships an update every 2 weeks, Fourfold every 11 days. Both last shipped on November 10, 2026.
| Parameter | OpenAppLock | Fourfold |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (9 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 9 — better | — |
| Update frequency | Every 2 weeks | Every 11 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPhone, iPad | iPhone, Apple Watch |
| Requires iOS | 26.0 | 17.0 — better |
| Further details — not scored | ||
| Size | 13 MB | 110 MB |
| Age rating | 4+ | 4+ |
| Developer | Brendan Chen | Noctral |
In-app purchases
OpenAppLock
No in-app purchases
Fourfold
- 7-Day TrialFree
- Fourfold Pro$7.99









