Comparison

ChessScroll vs Nightlock

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

ChessScroll

This app locks distracting applications behind chess puzzles. Solve a puzzle to earn minutes of screen time for your chosen apps. It aims to reduce screen time by integrating practice into existing habits.

Highlights
  • App locking with chess puzzles
  • Customizable scroll time per puzzle
  • Offline puzzle functionality
  • Personalized puzzle difficulty
  • Privacy-focused, no account needed
  • Reduces screen time through habit integration
Features
Read full description

Your feed costs a move now. ChessScroll seals the apps that eat your evenings — Instagram, TikTok, YouTube, whichever you choose — behind a chess puzzle at your level. Solve it and you earn minutes of scroll. Fail it and the position waits. That's the whole app. That's the whole deal. THE DEAL 1 puzzle = minutes of scroll. You set the exchange rate. HOW IT WORKS 1. Seal your apps. Pick the ones that eat you. 2. Reach for one, and a puzzle appears instead. 3. Solve it. The app opens and your clock starts running. 4. Minutes run out mid-scroll? In chess we call that flagging. Solve another. WHY IT WORKS You already reach for your phone dozens of times a day. ChessScroll doesn't fight that urge — it reroutes it. Every reach becomes one tactic at your level: twenty to forty seconds, and a real fight. It's the training every coach prescribes and nobody actually does, attached to a habit you already have. TWO NUMBERS, FACING EACH OTHER — Your puzzle rating, climbing. — Your daily screen time, falling. Everything else is supporting cast. REAL PUZZLES, AT YOUR LEVEL Nearly fourteen thousand positions from real games, each one rated by the players who tried it before you, and served at your rating rather than under it, so the rating you build is earned. Works fully offline. From 400 to 2700, the puzzle fits. THE CLIMB Fourteen chapters, one for each master: Morphy, Anderssen, Steinitz, Lasker, Capablanca, Alekhine, Botvinnik, Nezhmetdinov, Tal, Petrosian, Spassky, Fischer, Karpov, Kasparov. Every six puzzles you solve lays a stone on their road, and the one you solved at midnight to get into Instagram counts the same as the one you chose to play. The road stops at twenty-eight of their own games, and every one you solve goes into your album as a card. You never have to open the tab for it to move. NO NEW ADDICTION Training sessions end by design. No infinite puzzle feed, no guilt notifications, no nagging. Paul Morphy said in 1859 that chess should never engross the mind. We're inclined to agree. PRIVACY Your app choices and screen-time data never leave your device — Apple's Screen Time framework enforces that by design. No account needed. MEMBERSHIP ChessScroll requires a membership: yearly with a 7-day free trial, or monthly. Subscriptions auto-renew until cancelled in Settings. Terms: https://chessscroll.com/terms — Privacy: https://chessscroll.com/privacy Earn your scroll.

About

Nightlock

This app helps you break scrolling habits by locking distracting apps on a schedule or after a set daily limit. It offers friction to encourage mindful usage and provides statistics on your progress. Calls, texts, and alarms are always accessible.

Highlights
  • App and website blocking
  • Scheduled lock times
  • Daily app usage limits
  • Per-app limits
  • Strict mode for unbreakable locks
  • Usage statistics and streaks
  • Always-on calls, texts, and alarms
Features
Read full description

Scrolling in bed again? Nightlock puts your apps to bed on schedule. Pick the apps that keep you up and set a bedtime. They lock at night and open again in the morning. Add a daily limit for the rest of the day. No willpower required — just enough friction to stop you. HOW IT WORKS • Pick the apps, sites or categories that pull you in • Set a bedtime — they lock at night and unlock in the morning • Add a daily limit — when it runs out, they lock until tomorrow MORE THAN A TIMER • Lock now — shut everything for 25 minutes, an hour, two hours or until midnight • Schedules — bedtime, study time or any window you choose • Per-app limits — give one app a tighter budget of its own • Early unlocks cost time — each one today waits a little longer, up to 5 minutes • Strict mode (Premium) — a lock that can't be broken early at all • Streaks and stats — watch the scroll-free days add up • Calls, texts and alarms always get through PRIVATE BY DESIGN No account. No tracking. Your apps, limits and stats stay on your iPhone, on top of Apple's Screen Time. PLANS Free: up to 3 apps, sites or categories under one daily limit, one schedule and one per-app limit. It doesn't expire. Premium: unlimited apps, a limit for every app, as many schedules as you like, Strict mode, no unlock wait and your full stats history. Weekly or yearly subscription (7 days free on the yearly plan), or a one-time lifetime purchase. Cancel anytime. Payment is charged to your Apple Account at confirmation of purchase. A subscription renews automatically unless it is cancelled at least 24 hours before the end of the current period. Manage or cancel it in Settings › Apple Account › Subscriptions. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://mikitach.github.io/timesup-legal/privacy.html

Screenshots

ChessScroll4 screens
Nightlock4 screens

Verdict

The call

The clearest difference is monetization model: Nightlock at freemium against ChessScroll's subscription. On price, review sentiment, update cadence and ads 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. ChessScroll sells 2 in-app purchases, starting at $7.99 per month and Nightlock sells 3 in-app purchases, starting at $2.90 per 7 days. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

ChessScroll ships an update fortnightly, Nightlock every 2 weeks. The most recent releases landed on October 28, 2026 and October 31, 2026 respectively.

Scorecard1 real difference · 9 level
ChessScroll versus Nightlock: the parameters behind the verdict, then further details
ParameterChessScrollNightlock
PriceFreeFree
Rating3.0 (2 ratings) — better—
Positive reviews0.0% of reviews0.0% of reviews
Number of ratings2 — better—
Update frequencyFortnightlyEvery 2 weeks — better
AdsNoNo
In-app purchasesYesYes
MonetizationSubscriptionFreemium — better
DevicesiPhoneiPhone
Requires iOS17.017.0
Further details — not scored
Size100 MB17 MB
Age rating4+4+
DeveloperMICHAŁ ROSTKOWSKIMikita Chyrkun

Customer experience

ChessScroll

All ratings2 ratings
Positive50.0%
Neutral0.0%
Negative50.0%
Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

Nightlock

Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

In-app purchases

2 purchases

ChessScroll

Subscriptions2
  • Monthly Membership$7.991 Month
  • Annual Membership3 Days trial$39.991 Year
3 purchases

Nightlock

Subscriptions2
  • Weekly$2.907 Days
  • Yearly7 Days trial$39.901 Year
One-time1
  • Lifetime$79.90

Questions

Is ChessScroll free?
ChessScroll is free to download, with in-app purchases available.
Is Nightlock free?
Nightlock is free to download, with in-app purchases available.
Do ChessScroll or Nightlock have ads?
Neither ChessScroll nor Nightlock shows ads.
Which is updated more often, ChessScroll or Nightlock?
ChessScroll ships an update fortnightly, and Nightlock every 2 weeks. Most recently, ChessScroll was updated on October 28, 2026 and Nightlock on October 31, 2026.

Other comparisons