Comparison

SnapCal vs Deadline Backsolve

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

Head to head
About

SnapCal

This calendar application offers beautiful, customizable views for daily, weekly, and monthly event planning. It seamlessly integrates with Google Calendar and Tasks, consolidating your schedule into one intuitive interface. Navigate your events with an innovative fan-inspired UI.

Highlights
  • Beautiful calendar views (portrait/landscape)
  • Day, week, month layouts
  • Google Calendar integration
  • Google Tasks integration
  • Fan UI for navigation
Features
Read full description

SnapCal is a calendar app. SnapCal provides seamless integration for Google Calendar, Tasks. ●Beautiful Calendar Views Designed for both Portrait and Landscape Distinctive layouts for day, week and month view. ●Connect with Google Calendar, Tasks. SnapCal combines your events from different calendars, and provides seamless Google Calendar integration. ● A Fan UI An innovative UI inspired by the fan, makes it so easy to navigate through your daily events.

About

Deadline Backsolve

This app helps you adjust project plans when deadlines are at risk. It calculates the shortfall and suggests concrete adjustments like extending deadlines or reducing scope. The interface is currently in Japanese only.

Highlights
  • Calculates shortfall and suggests fixes
  • Adjusts plans based on available time
  • Learns user's real work pace
  • Offers recovery plan options
  • Focus timer that survives crashes
  • Offline functionality
  • JSON export/import for data transfer
Features
Read full description

When you realize you won't hit the deadline, what you actually need is the answer to "so what do I change?" Deadline Backsolve computes the shortfall and gives you concrete fixes: "push the deadline 3 days", "add 45 minutes per working day", "cut 4 pages". Real numbers, not a warning label. ■ Three inputs. Thirty seconds. What, how much, by when. That's the whole setup. Stages and per-weekday hours can wait until later. ■ Split the work into stages (new in 1.4) Thumbnails → pencils → inks → finishing, or outline → first draft → revision. Give each stage its share of the time per page, and the Today screen tells you exactly what to do: "Pencils 6 pages → then Inks 2 pages". The project screen shows each stage's progress. Stages are optional, and recovery plans keep working as before. ■ You only look at today The home screen says "Today: 8 pages." That's it. No Gantt charts, no dense tables. Tap "+1 page" when you're done. ■ It follows your real week One hour on weekdays, three on weekends? Your quota is distributed by the time you actually have. ■ It learns your real pace It starts from an estimate, then switches to your measured minutes per page once you have logged enough work. ■ Recovery plans, computed - Switch to a later registered deadline (with hours gained) - Extend the deadline by N days - Add N minutes per working day - Cut N units - Finish each unit within N minutes - Open up a day you had marked as rest Tap any of them to apply it to the plan immediately. ■ A focus timer that survives a crash It stores the start time, so closing the app never loses your session. It never plays a sound effect. ■ Your entries stay on your device No account. No ads. What you enter never leaves your device. To improve the app, only anonymous usage data (such as which screens are opened) is counted with Google Analytics (you can turn this off in Settings). Move it with a JSON export/import when you change phones. ■ One-time purchase. No add-ons. Everything is unlocked at purchase. Unlimited projects and logs. No subscription. ■ Available in English, Japanese, German, French, Korean and Traditional Chinese. Works for comics, novels, illustration books and merch, but also for articles, reports and theses — anything with an amount and a due date. Name the unit whatever you like.

Screenshots

SnapCal4 screens
Deadline Backsolve4 screens

Verdict

The call

The clearest difference is review sentiment: Deadline Backsolve at 100% against SnapCal's 46%. Deadline Backsolve also leads on update cadence (weekly vs every 2 months). SnapCal's advantage is price (Free vs $0.99). On ads, in-app purchases, device support and iOS requirement 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

SnapCal is free to download; Deadline Backsolve costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

SnapCal ships an update every 2 months, Deadline Backsolve weekly. The most recent releases landed on October 9, 2026 and October 25, 2026 respectively.

Scorecard4 real differences · 6 level
SnapCal versus Deadline Backsolve: the parameters behind the verdict, then further details
ParameterSnapCalDeadline Backsolve
PriceFree — better$0.99
Rating4.0 (2 ratings) — better—
Positive reviews46.3% of reviews100.0% of reviews — better
Number of ratings2 — better—
Update frequencyEvery 2 monthsWeekly — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree — betterPaid
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.017.0
Further details — not scored
Size6 MB4 MB
Age rating4+4+
DeveloperAsteria CorporationDaisuke Yamaguchi

Customer experience

SnapCal

All ratings2 ratings
Positive50.0%
Neutral50.0%
Negative0.0%
Written reviews80 reviews
Positive46.3%
Neutral12.5%
Negative41.3%

Deadline Backsolve

Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

SnapCal

No in-app purchases

None

Deadline Backsolve

No in-app purchases

Questions

Is SnapCal free?
SnapCal is free to download, with no in-app purchases.
Is Deadline Backsolve free?
Deadline Backsolve costs $0.99, with no in-app purchases.
Do SnapCal or Deadline Backsolve have ads?
Neither SnapCal nor Deadline Backsolve shows ads.
Which is updated more often, SnapCal or Deadline Backsolve?
SnapCal ships an update every 2 months, and Deadline Backsolve weekly. Most recently, SnapCal was updated on October 9, 2026 and Deadline Backsolve on October 25, 2026.

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