Comparison

Mastery Timer vs Plain and Simple Thoughts

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

Head to head
About

Mastery Timer

Features
Read full description

Mastery Timer turns the time you spend getting good at something into visible progress. Pick the skills you want to master. Writing, reading, an instrument, a language, a sport, meditation, anything. Give each one a daily goal, and fill its bar a little more every day. Every minute counts toward the bigger picture: the path to 10,000 hours of mastery. As your hours add up you rise through 25 ranks, from your very first session to true mastery, and the app tells you something new at every single hour. Not only at the milestones, every hour. What is shifting in your craft, what you have unlocked, how far you have come. No points to lose. No guilt. No streaks that punish you for a missed day. Lifetime hours and ranks only ever go up. If you skip a day, a streak simply starts again, quietly. Mastery Timer is built for years of use, not for a quick hit. Features - Create as many skills as you want, each with its own daily goal - A clean bar you fill each day, with a gentle gong when you reach your goal - A lifetime mastery view: your hours, your current rank, and encouragement that changes every hour - Tailored progress for each kind of skill, from writing to music to fitness - Fully offline and private. Your practice stays on your device. No account, no data collected - A calm, distraction free design The work is the point. Mastery Timer just makes the hours add up where you can see them.

About

Plain and Simple Thoughts

Save articles, recipes, receipts, and important documents from any app. Automatically categorizes saved items and displays them as they were originally saved. Offers a clean reading experience and smart organization for your digital life.

Highlights
  • Save links and text from any app
  • Automatic categorization of saved items
  • Preserves original page appearance
  • Extracts recipe ingredients and methods
  • Organizes receipts and warranties
  • Stores important papers like IDs
  • Offline indexing for Home Screen search
Features
Read full description

Share a link. It is waiting when you want it. For anyone who keeps meaning to read something later and has run out of places to put it — a pile of open tabs, a message sent to themselves, a bookmark folder nobody opens. It has since grown three more shelves for the other things that end up in a drawer: recipes, receipts and warranties, and papers like a passport or a licence. Each stands on its own, and the ones you do not need can be ignored. HOW IT WORKS In any app — Safari, a message, a social app — tap Share and choose it. That is the whole of using it. The sheet saves and closes by itself. Start typing before it does and you can leave yourself a note about why you kept it, which three weeks later is the harder thing to reconstruct. It works whether the other app hands over a web address or a lump of text with an address buried inside it. If you would rather not use the share button at all, there is a + on your library: paste an address straight in. IT SORTS ITSELF Saved things are grouped by what they are — an article, a video, code, a reference page, a post — and by where they came from. A long list stays findable without you filing anything. What you have not read yet is what you see first. They turn up in your Home Screen search as well, from an index built on your own device and offered to nobody. IT LOOKS LIKE THE THING YOU SAVED It fetches the page's title and its preview picture, so a saved link reads as the thing it is rather than as a row of characters. That request goes to the site you saved and to nowhere else. It is the one thing this app sends anywhere, and it is described in full on the privacy page rather than left to a label. It strips the tracking parameters off a link before storing it, so what you keep is the page rather than a record of where you found it. READING Tap to read it inside the app, in Safari's reader. Archive it when you are done, or delete it. You can pick several at once to archive them or mark them read — there is deliberately no way to delete a pile, because archiving can be undone and deleting cannot. RECIPES Share a recipe page and the ingredients and the method are pulled out as you save it. That is reading rather than guesswork — recipe sites publish their recipes as structured data — so nothing is invented and no step is dropped. You can also paste an address, write one out yourself, or photograph a cookbook page and let the phone read the words off it. Amounts double, halve and convert, and a cooking mode shows one step at a time with the screen kept on. RECEIPTS AND WARRANTIES What it cost, where it came from, and when the cover runs out — listed by whatever expires soonest. Photograph the receipt and your iPhone reads the shop, the total and the serial number off the picture and offers them to you before anything is saved. Search finds them by the serial number too. PAPERS A passport, a licence, an insurance card: the number, the expiry, and a picture of it. The tab can be put behind Face ID or your passcode, and that is off until you turn it on. Pin one and its number can sit on your Home Screen or Lock Screen. A warranty or a paper can carry a reminder before the date, scheduled and delivered by your own iPhone. There is none unless you ask for one. YOUR OWN iCLOUD Your library syncs through your own iCloud account, so a link saved on the phone is on the iPad — where it lays itself out as an iPad app rather than a stretched phone screen. It sits in your private database, under your Apple Account. There is no server of mine — I have no access to it and no way to read it. WHAT IT DOES NOT DO • No adverts, no purchases, no subscription • No account to create and nothing to sign into • No analytics, no tracking, no reading history shared with anyone One thing to know before you start: iOS makes you switch a share button on by hand the first time. Tap Share, scroll the icons to the right, tap More, and switch it on. You only do it once, and the app explains it.

Screenshots

Mastery Timer4 screens
Plain and Simple Thoughts4 screens

Verdict

The call

The clearest difference is in-app purchases: Plain and Simple Thoughts at none against Mastery Timer's 1. Mastery Timer's advantage is update cadence (every 2 days vs every 5 days) and iOS requirement (16.4 vs 18.0). On price, 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Mastery Timer sells 1 one-off in-app purchase. Plain and Simple Thoughts asks for nothing beyond the download.

UpkeepUpdate frequency

Mastery Timer ships an update every 2 days, Plain and Simple Thoughts every 5 days. Both last shipped on October 31, 2026.

Scorecard3 real differences · 6 level
Mastery Timer versus Plain and Simple Thoughts: the parameters behind the verdict, then further details
ParameterMastery TimerPlain and Simple Thoughts
PriceFreeFree
Rating—5.0 (1 ratings) — better
Number of ratings—1 — better
Update frequencyEvery 2 days — betterEvery 5 days
AdsNoNo
In-app purchasesYesNo — better
Monetization—Free
DevicesiPhoneiPhone, iPad — better
Requires iOS16.4 — better18.0
Further details — not scored
Size55 MB4 MB
Age rating4+17+
DeveloperArjun GuptePlain and Simple Solutions LLC

In-app purchases

1 purchases

Mastery Timer

One-time1
  • Friends$1.99
None

Plain and Simple Thoughts

No in-app purchases

Questions

Is Mastery Timer free?
Mastery Timer is free to download, with in-app purchases available.
Is Plain and Simple Thoughts free?
Plain and Simple Thoughts is free to download, with no in-app purchases.
Do Mastery Timer or Plain and Simple Thoughts have ads?
Neither Mastery Timer nor Plain and Simple Thoughts shows ads.
Which is updated more often, Mastery Timer or Plain and Simple Thoughts?
Mastery Timer ships an update every 2 days, and Plain and Simple Thoughts every 5 days. Most recently, Mastery Timer was updated on October 31, 2026 and Plain and Simple Thoughts on October 31, 2026.

Other comparisons