Comparison

SolarWriter vs NotaTime

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

Head to head
About

SolarWriter

Transform your e-reader into a portable typewriter for outdoor writing. This app connects your keyboard to your e-reader's screen, allowing you to type comfortably on e-ink displays in bright sunlight. Save and share your work easily.

Highlights
  • E-reader integration
  • External keyboard support
  • Outdoor writing on e-ink screens
  • Text mirroring to e-reader
  • File saving and sharing
  • Detailed setup instructions
Features
Read full description

Traditional screens are fantastic everywhere but outside, especially on a sunny day. E-ink screens work well, but e-readers like the Kindle are difficult to type on and don't support external keyboards. SolarWriter gives you the best of both worlds. SolarWriter runs on your iOS device and acts as a hub between your keyboard and your e-reader. You type on the keyboard, and the text appears on both on the iOS device and on the e-reader's screen (via its web browser). Take advantage of your Kindle's (or other e-reader's) e-ink screen to put your thoughts on paper even outside, with no need to transcribe later. Write at parks, on beaches, in backyards... anywhere you wanted to but couldn't. Save files on your device, or share through email, SMS, and more. Detailed instructions for setup are included inside the app.

About

NotaTime

Read full description

Take control of your time with NotaTime, the clean and fast tracker built for real life. Track work, study, and focus sessions the moment they start. Launch a timer in one tap, add quick notes, and watch your day build automatically. With live widget updates and clear daily totals, you always know where your time goes. Now with Auto-Invoice Mode built for freelancers: set your default client, project, and hourly rate once, see live earnings while tracking, and export invoice-ready reports with clear billable-only totals. No clutter. No complicated setup. Just smooth, reliable tracking you’ll actually use. Why people choose NotaTime: • One-tap start and stop • Home Screen widget with live timer status • Clear daily total at a glance • Add notes to every session • Edit and organize entries anytime • Mark entries as billable or non-billable • Auto-Invoice defaults for client, project, and rate • Live earnings while timer runs • Export to PDF, Invoice, or CSV for reports • Pre-send invoice checks (empty notes, overlaps, long/short sessions) • Helpful reminders to stay consistent • iCloud sync support Whether you’re freelancing, studying, or building better habits, NotaTime makes every hour count. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

SolarWriter3 screens
NotaTime4 screens

Verdict

The call

The clearest difference is update cadence: NotaTime at every 10 days against SolarWriter's every 5 months. On price, ads, in-app purchases 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. SolarWriter sells 1 one-off in-app purchase and NotaTime sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

SolarWriter ships an update every 5 months, NotaTime every 10 days. The most recent releases landed on October 10, 2026 and October 8, 2026 respectively.

Scorecard1 real difference · 9 level
SolarWriter versus NotaTime: the parameters behind the verdict, then further details
ParameterSolarWriterNotaTime
PriceFreeFree
Rating3.8 (16 ratings) — better—
Positive reviews60.0% of reviews—
Number of ratings16 — better—
Update frequencyEvery 5 monthsEvery 10 days — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.6 — better16
Further details — not scored
Size92 MB3 MB
Age rating4+12+
DeveloperCool S, LLCNice Software AS

In-app purchases

1 purchases

SolarWriter

One-time1
  • SolarWriter Pro$9.99
1 purchases

NotaTime

One-time1
  • NotaTime Lifetime$9.99

Questions

Is SolarWriter free?
SolarWriter is free to download, with in-app purchases available.
Is NotaTime free?
NotaTime is free to download, with in-app purchases available.
Do SolarWriter or NotaTime have ads?
Neither SolarWriter nor NotaTime shows ads.
Which is updated more often, SolarWriter or NotaTime?
SolarWriter ships an update every 5 months, and NotaTime every 10 days. Most recently, SolarWriter was updated on October 10, 2026 and NotaTime on October 8, 2026.

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