Rivoko vs TANGENT
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Rivoko
A turn-based strategy game on a 5x5 board where placing stones flips others. Aim to create lines of four or more to win, but be mindful of your opponent's opportunities. Features solo challenges, local multiplayer, and interactive lessons.
- Turn-based strategy gameplay
- 5x5 board with stone flipping mechanics
- Five unlockable AI rivals
- Local two-player mode
- Interactive tutorial lessons
- Offline play
- Game replay functionality
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One stone. Four directions. A board that changes with every move. Rivoko is a turn-based strategy game played on a 5×5 board. Place a black or white stone and flip the first existing stone in each horizontal and vertical direction—even your own. Make a line of four or more to win, but look closely: your move can give your opponent the winning line. CLIMB THROUGH FIVE RIVALS Meet Nio, Kira, Bram, Vey and Nox. Earn unassisted wins to unlock the next rival, then win with both colors to master each challenge. PLAY TOGETHER Challenge a friend in local two-player mode on one iPhone. Take turns, switch colors for a rematch and review the game move by move. LEARN BY PLAYING Four interactive lessons introduce the rules. Preview the stones that will flip before you commit. Use hints and undo in solo training, then put what you learned into practice. PICK UP WHERE YOU LEFT OFF Matches, settings and achievements are saved on your device. Revisit completed games with a move-by-move replay. MADE FOR QUIET FOCUS Enjoy a tactile board, animated 3D rivals, light and dark themes, and English or German. Rivoko works entirely offline, with no accounts, ads or in-app purchases.
TANGENT
This logic puzzle game challenges you to land every dot in its socket using a single, exact rule. With no timers or luck involved, it offers a satisfyingly precise and mentally stimulating experience. Explore various difficulty levels and unique mechanics across multiple orbits.
- One exact rule for gameplay
- No timers or luck involved
- Endless, procedurally generated boards
- Six distinct difficulty orbits
- Daily brain teasers
- Supports VoiceOver and Dynamic Type
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Rings turn one notch per tap. A dot can hop to the next ring only at the exact moment two rings kiss. Land every dot in its socket in the fewest moves. A logic puzzle with one exact rule, no timer and no luck. NEW IN 2.0: ENDLESS A fresh board every time, made on your phone and proved by the solver before you see it. Six difficulties, drawn at random after an easy start, from gentler than Orbit 1 to as tough as Orbit 6. Solve at par to grow your chain. No timer, no lives, no end. ONE RULE, EXACT Tap anywhere and every ring clicks round by its own spin: +1, −1, +2, or not at all. Tap a dot while it sits at a kiss and it arcs across to the touching ring. That is the whole game. Nothing is random inside a level and nothing is timed, so every board is a small piece of clockwork you can read before you touch it. THE CLICK OF GEARS MESHING The feeling you chase is the socket swinging into the kiss as the dot arrives. Every tick, hop and dock has its own sound, haptic and light: the notch marks blink in sequence, the hop leaves a luminous trail, the socket blooms, and a solved level ends on one calm chord. 120 LEVELS IN SIX ORBITS Every level was generated and proved by a solver, so par is the true minimum and a level is never unsolvable, only over par. Every orbit is free to reach: earn 40 stars in one and the next opens. Each adds one twist: • Kiss – two rings, one dot, one socket. Learn the hop. • Wall – a stop bar rides the ring and refuses a landing. • Flip – a marked notch sends its ring the other way. • Three – a third dot, and three colors to route at once. • Still – rings that do not turn, and mixed spins. • Tangent – everything, on twelve-notch rings. Three stars means par. Undo is free and unlimited, restart is free, and one hint per level shows the solver’s next move. ONE DAILY, ONE STREAK A new brain teaser every day, built on your phone from the date, the same for everyone. Par is shown before you start. Solve it and your streak grows; share the result as text, not a screenshot. Reminders are optional, up to three a day, and stop once the day’s puzzle is solved. MADE TO BE READ Every dot and socket carries a shape as well as a color, so no rule depends on color alone. Reduce Motion turns every pulse and burst into a fade. VoiceOver and Dynamic Type are supported throughout. Sessions are two to five minutes, one-handed, and every move is saved, so you can put the phone down mid-level and pick up exactly where you were. WHAT’S INCLUDED • Game Center: leaderboards for total stars and best streak, seven achievements. • iCloud: your progress follows you to a new phone. • No account, no in-app currency, no lives, no timers. FREE TO PLAY, ONE UNLOCK TANGENT is free to play, with ads: a banner on the menu screens, never on the board, and now and then a short ad between puzzles. TANGENT Full Game ($4.99, once, no subscription) removes every ad, opens all six orbits at once, and adds the daily archive of the past 30 days and Skip board in Endless. Without it, you can watch an ad to skip an Endless board. Restore Purchases and offer-code redemption are on the Unlock screen and in Settings. Privacy Policy: https://tangent.devera.app/privacy/ Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is in-app purchases: Rivoko at none against TANGENT's 1. Rivoko also leads on ads (none vs shown). On price, rating, ratings volume and update cadence 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. TANGENT sells 1 one-off in-app purchase. Rivoko asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 5.0 for Rivoko against 5.0 for TANGENT. Both are backed by a comparable volume of ratings — 1 and 1 respectively.
Rivoko ships an update every 4 weeks, TANGENT every 3 weeks. The most recent releases landed on October 7, 2026 and October 29, 2026 respectively.
| Parameter | Rivoko | TANGENT |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) | 5.0 (1 ratings) |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 1 | 1 |
| Update frequency | Every 4 weeks | Every 3 weeks — better |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone | iPhone |
| Requires iOS | 17.0 — better | 18.0 |
| Further details — not scored | ||
| Size | 10 MB | 24 MB |
| Age rating | 4+ | 4+ |
| Developer | paul zogmann | Farzin Tavakoli |
Customer experience
Rivoko
TANGENT
In-app purchases
Rivoko
No in-app purchases
TANGENT
- TANGENT Full Game$4.99









