# Ninefold: Daily Variant Sudoku — Killer, Thermo, Jigsaw & more

> Killer, Thermo, Jigsaw & more (iPhone/iPad app by Shup LLC.)

- Source: https://appshunter.io/ios/app/ninefold-daily-variant-sudoku/id6811041674 (this page in markdown: same URL + `.md`)
- Developer: [Shup LLC](https://appshunter.io/developer/1766811003)
- Category: Games, Board, Puzzle
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 17.0 · 40 MB
- Languages: American English, French (France), German (Germany), Hebrew, Italian, Japanese, Korean, Brazilian Portuguese, Russian, European Spanish
- Released: 2026-09-17
- Data updated: 2026-09-22

## What is Ninefold?

Ninefold Sudoku is the daily home for variant sudoku.

A NEW VARIANT EVERY DAY
Monday Classic, Tuesday Killer, Wednesday Diagonal, Thursday Jigsaw, Friday Thermo, Saturday Sandwich, and a Sunday Duo that combines two rule sets. Every daily puzzle is hand-verified to have exactly one solution and to be solvable by pure logic — no guessing, ever.

THE 6×6 SPRINT
A one-to-three-minute race with an accuracy grid you can share: green for first try, yellow for corrected. Compare times with friends and on Game Center.

A COACH THAT TEACHES
The hint button never just gives you a digit. First a nudge ("Look at box 5"), then the name of the technique, then the deduction drawn on the board, and only then the digit. Twenty-four techniques, from naked singles to X-Wings, XY-Wings, cage combinations, the 45 rule, thermometer bounds and sandwich arrangements — each with a playable lesson and a mastery badge.

EVERY VARIANT, UNLIMITED
Practice any variant at five grades, from Easy to Extreme, with thousands of verified puzzles and new ones generated as you play. Take on the weekly Variant Cup: seven puzzles, one score, one leaderboard.

MADE TO BE HELD
Ink on warm paper, a board drawn like a printed puzzle magazine, digits that drop in with a soft ripple, calm sound and haptics designed together. Dark theme, four extra themes, full Dynamic Type and VoiceOver support, left-hand mode, and an iPad layout.

STREAKS AND STATS
Separate streaks for the variant and the Sprint, Perfect Days, streak freezes, a calendar archive, per-variant stats, achievements and a trophy room. Widgets show today's variant and your streak.

FAIR BY DESIGN
Ads appear only on the completion screen, never on the board. One purchase removes them for good. Hints are always available by choice.

Ninefold Premium (optional): no ads, unlimited hints, the full archive, every theme and advanced stats — $3.99/month or $19.99/year with a 3-day free trial. Payment is charged to your Apple ID; subscriptions renew automatically unless cancelled at least 24 hours before the end of the period. Privacy: https://ninefold-sudoku.pages.dev/privacy/ · Terms: https://ninefold-sudoku.pages.dev/terms/

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Premium Yearly | $19.99 | per year |
| Premium Monthly | $3.99 | per month |

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Ad-Free | $7.99 | one-time |
| 30 Hints | $1.99 | one-time |
| 100 Hints | $4.99 | one-time |
| 300 Hints | $9.99 | one-time |
| 2 Streak Freezes | $0.99 | one-time |
| Starter Pack | $0.99 | one-time |


## Is Ninefold safe?

Not enough ratings yet to assess Ninefold.

## Is Ninefold legit?

Ninefold: Daily Variant Sudoku has limited verification signals. The AppsHunter Legitimacy Score for Ninefold is 58 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 1 release)

### 1.0 — 2026-09-17

No release notes.

## More apps by Shup LLC

- [TripWiser – Social Travel](https://appshunter.io/ios/app/tripwiser-social-travel/id6751107025)

All apps by Shup LLC: https://appshunter.io/developer/1766811003

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-22.*