Shift Calendar vs Project Jar
Price, ratings, monetisation and update history for both apps, side by side ā with what reviewers say about each.
Shift Calendar
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Plan your shifts, not your stress. Shift Calendar turns any rotating schedule into a clear, color-coded calendar in seconds, built for nurses, doctors, police, firefighters, EMTs, factory and offshore workers. SET UP ONCE, SEE YOUR WHOLE YEAR - Pick a ready-made pattern (4 on 4 off, DuPont, Pitman, 2-2-3, 7/7, 14/14, 5/2) or build your own - Your rotation repeats automatically, months and years ahead - Month, week and year views MADE FOR SHIFT WORKERS - Day, night, off, on-call, holiday and custom shift types with your own colors - Notes, tags and overtime on any day - Shift reminders so you never miss the start of a shift KNOW YOUR WORK-LIFE BALANCE - Hours worked, night shifts and days off per month and year - Earnings estimate from your hourly rate SHARE WITH FAMILY - Family view to see several schedules side by side - Export to PDF, calendar (ICS) or CSV and share in one tap - Share a pattern with coworkers via QR code PRIVATE BY DESIGN No account, no sign-up. Works fully offline. Your schedule stays on your device. PRO Unlock detailed statistics, clean PDF export, multiple profiles, family view and smart alerts. Choose yearly (with a 7-day free trial), monthly or a one-time lifetime purchase. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the period. Manage or cancel anytime in your App Store account settings. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Project Jar
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Too many ideas. No idea where to start. Project Jar is for people whose problem was never coming up with things to make - it's picking one. Drop every idea into the jar, and when you finally have a free evening, let the jar decide. CAPTURE IT BEFORE IT'S GONE ⢠Add an idea in seconds - type it, or hold the mic and just talk ⢠Tag it: music, app, video, writing, or categories you invent ⢠Attach photos and reference shots ⢠Search everything you've ever thrown in LET FATE PICK ⢠Tap spin and watch your Spark pull a slip out of the jar ⢠Seven animated draw scenes to pick from ⢠Exclude the categories you're not in the mood for today ⢠The decision is made. Go make something. ONE IDEA, ONE PAGE ⢠Every idea opens as a document - notes, headings, bullets, photos and to-dos in one flow ⢠Check things off as you go ⢠Turn an idea into a real project the moment it's ready A COMPANION THAT NEVER GUILT-TRIPS YOU ⢠Your Spark lives in a little room and reacts to what you make ⢠Disappear for a week? It gets more encouraging, not less. This is the opposite of a guilt app. ⢠Unlock new looks, posters and postcards the more you create ⢠After 30 quiet days it moves out - and you can always bring it home TRACK SHOWING UP, NOT OUTPUT ⢠A GitHub-style activity grid across every project you touch ⢠Tap any day to see exactly what you did ⢠Streaks that celebrate and never scold YOURS, AND ONLY YOURS ⢠No account, no sign-up, no ads, no tracking ⢠Everything lives on your iPhone ⢠Optional daily reminder, entirely local OPTIONAL AI Voice capture works the moment you install it, using Apple's built-in speech recognition - free, no setup, nothing to configure. If you want Whisper-grade transcription plus automatic parsing of a rambling voice note into a clean, tagged idea, there are two ways to get it: 1. Bring your own keys ā paste your OpenAI and Anthropic API keys in Settings. Free in the app; you pay your provider directly. 2. Subscribe to ProjectJar AI ā no keys, no setup. ProjectJar AI Ā· $1.99 per month, auto-renewing Whisper transcription and smart idea parsing with nothing to configure. Payment is charged to your Apple Account at confirmation of purchase. The subscription renews automatically unless it is cancelled at least 24 hours before the end of the current period; your account is charged for renewal within 24 hours of the period ending. Manage or cancel anytime in your Apple Account settings. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://gitlab.com/seisembay/projectjar/-/blob/main/privacy-policy.md App terms: https://gitlab.com/seisembay/projectjar/-/blob/main/terms.md Built by one person with far too many unfinished projects, who needed this to exist.
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Verdict
Shift Calendar and Project Jar are too close to call on the numbers: across 5 compared parameters ā price, ads, in-app purchases and device support among them ā neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
Scored on Price Ā· Rating Ā· Positive reviews Ā· Number of ratings Ā· Update frequency Ā· Ads Ā· In-app purchases Ā· Monetization Ā· Best chart rank Ā· Devices Ā· Requires iOS
Both are free to download. Shift Calendar sells 4 in-app purchases, starting at $4.99 per 7 days and Project Jar sells 2 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.
| Parameter | Shift Calendar | Project Jar |
|---|---|---|
| Price | Free | Free |
| Update frequency | Fortnightly | ā |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Devices | iPhone, iPad ā better | iPhone |
| Requires iOS | 17.0 ā better | 18.0 |
| Further details ā not scored | ||
| Size | 15 MB | 48 MB |
| Age rating | 4+ | 12+ |
| Developer | EMRE KOTUN | Islam Seisembay |
In-app purchases
Shift Calendar
- Weekly Premium Access$4.997 Days
- Monthly Pro$5.991 Month
- Yearly Premium Access$29.991 Year
- Lifetime Pro$59.99
Project Jar
- AI Voice Transcription/Parser$1.991 Month
- Revival$0.99
Questions
Is Shift Calendar free?
Is Project Jar free?
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