Comparison

Scan Flow vs Numline

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

Head to head
About

Scan Flow

Features
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Scan Flow turns paper into clean, multi-page PDFs, fast. Point your camera at a document, receipt, or note, and Scan Flow auto-detects the edges, straightens the page, and adds it to your document. Reorder the pages, name it, and you have a polished multi-page PDF ready to share. No subscription. No account. Nothing leaves your device. SCAN ANYTHING โ€ข Auto edge-detection and perspective correction โ€ข Multi-page capture: keep adding pages in one go โ€ข Or import existing photos straight from your library CLEAN, TIDY PAGES โ€ข Pages are laid out on uniform US-Letter sheets, never stretched or cropped โ€ข Combine many pages into one polished multi-page PDF PUT IT IN ORDER โ€ข Drag pages to reorder them โ€ข Delete or retake any page โ€ข Name your document before you export SHARE YOUR WAY โ€ข Export a single multi-page PDF โ€ข Or save every page as JPEGs bundled into one .zip โ€ข Send to Files, Mail, Messages, AirDrop, or print PRIVATE BY DESIGN โ€ข 100% on-device. No cloud, no tracking, no sign-in. FREE & PRO Scan Flow is free to use for documents up to 2 pages. Unlock Scan Flow Pro once ($4.99) for unlimited pages and ZIP export. One purchase, yours forever, no subscription.

About

Numline

Features
Read full description

Numline is a calculator you type into like a notepad. Write your maths in plain words on the left, and answers appear instantly on the right. No buttons to hunt for. No equals key. Just type a line โ€” "120 USD to EUR", "20% of 4800", "rent = 2400" โ€” and Numline works it out as you go. WHAT YOU CAN DO โ€ข Plain-language maths โ€” write "95 EUR * 4" and read the answer beside it โ€ข Currencies โ€” convert between world currencies: "cost in JPY to USD". Rates update automatically; offline, the last ones stand in and results are approximate โ€ข Units โ€” length, mass, volume, temperature and more: "120 km to miles", "356 F to C" โ€ข Percentages โ€” tips, discounts and splits in words: "89 + 15%", "240 / 4 + 10%" โ€ข Variables โ€” name a value once and reuse it: "rate = 85", "32 * rate" โ€ข Totals โ€” "total" sums the block above; a blank line starts a fresh one โ€ข Dates โ€” "trip - today", "trip + 2 weeks" and other quick date maths โ€ข Functions โ€” sqrt, round, abs and friends when you need them โ€ข Shorthand โ€” "19k + 80k" reads thousands the way you say them โ€ข Themes โ€” Classic, Lime, Violet and Amber, each colouring your notation its own way โ€ข Many notepads โ€” keep a separate sheet for every plan Every line is live. Change a number and everything below it updates. It reads back like a note you wrote to yourself, so you can always see how you reached an answer. Numline stays quiet and focused: a dark editor, syntax colours you choose, and nothing in your way. No account. No subscription. No ads. Your notepads stay on your device. Just type.

Screenshots

Scan Flow4 screens
Numline4 screens

Verdict

The call

The clearest difference is price: Scan Flow at Free against Numline's $0.99. Numline's advantage is in-app purchases (none vs 1) and update cadence (every 2 days vs every 3 months). On ads, device support and iOS requirement there is nothing between them.

Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Scan Flow is free to download; Numline costs $0.99 up front. Scan Flow sells 1 one-off in-app purchase. Numline asks for nothing beyond the download.

UpkeepUpdate frequency

Scan Flow ships an update every 3 months, Numline every 2 days. The most recent releases landed on September 29, 2026 and September 27, 2026 respectively.

Scorecard3 real differences ยท 3 level
Scan Flow versus Numline: the parameters behind the verdict, then further details
ParameterScan FlowNumline
PriceFree โ€” better$0.99
Update frequencyEvery 3 monthsEvery 2 days โ€” better
AdsNoNo
In-app purchasesYesNo โ€” better
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.0 โ€” better18.0
Further details โ€” not scored
Size3 MB5 MB
Age rating4+4+
DeveloperAll Good Folks LimitedZhiqi Pan

In-app purchases

1 purchases

Scan Flow

One-time1
  • Scan Flow Pro$4.99
None

Numline

No in-app purchases

Questions

Is Scan Flow free?
Scan Flow is free to download, with in-app purchases available.
Is Numline free?
Numline costs $0.99, with no in-app purchases.
Do Scan Flow or Numline have ads?
Neither Scan Flow nor Numline shows ads.
Which is updated more often, Scan Flow or Numline?
Scan Flow ships an update every 3 months, and Numline every 2 days. Most recently, Scan Flow was updated on September 29, 2026 and Numline on September 27, 2026.

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