Cosmo Teacher vs FluencyCalc
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Cosmo Teacher
Manage your teaching schedule, bookings, and class preparations on the go. This app allows you to easily reschedule or cancel classes and update your availability directly from your mobile device.
- Check bookings
- Reschedule classes
- Cancel classes
- Update schedule
- Prepare for classes
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Cosmo Teacher Mobile App brings flexible features and more. More Features: Check your bookings, reschedule or cancel classes, update your schedule, prepare for classes, all from your phone. NOTE: you will NOT be able to take classes from the Cosmo Teacher Mobile App.
FluencyCalc
Instantly calculate oral reading fluency scores like WCPM, accuracy, and error ratios. Designed for K-5 educators, this app allows live tap-marking of miscues and provides detailed student progress tracking. All data is kept private on the device.
- Live tap-marking of errors and self-corrections
- Instant calculation of WCPM, accuracy, and error ratios
- Supports two assessment conventions (ORF/WCPM and Running Record)
- Student profiles with saved history and trend charts
- PDF assessment reports and CSV export
- Private by design with no accounts or analytics
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Time the read, tap the miscues, and the scores are done: WCPM, accuracy, error ratio, and self-correction ratio. Save each read to a student and watch the growth line climb, read after read. FluencyCalc is built for K–5 teachers, reading interventionists, tutors, and homeschool parents who run running records and oral reading fluency (ORF) checks every week. LIVE TAP-MARKING • Any passage you own becomes tappable words on screen • Start the timer and tap a word to mark an error or a self-correction • Long-press to set the last word read; the 60-second mode stops the clock and asks for the stopping word, just like the paper convention • Undo, an insertion counter, and a running WCPM preview • A short original practice passage is included, so you can run a live read in your first minute GROWTH FOR EVERY READER • Save each read under the student; initials are enough • WCPM and accuracy charts over time, with your benchmark line • A growth-chart card to share with families and colleagues REPORTS FOR THE FILE • A clean PDF report of any assessment, with your name and school in the header • CSV for one student, or a summary of the whole class • Your own passage library, ready for the next read QUICK CALCULATOR • Enter words, errors, self-corrections, and time: every score appears instantly • "How calculated" shows the arithmetic with your numbers in it TWO CONVENTIONS, CLEARLY LABELED • ORF/WCPM (curriculum-based measurement): insertions are not counted, self-corrections count as correct • Running record: insertions count as errors, self-corrections feed the SC ratio • Reading-level bands with cut-offs you set, printed on every report • Your own benchmark targets for comparison PRIVATE BY DESIGN • No accounts, no ads, no analytics, no network calls: everything stays on this device • Student fields are designed for initials or first names • Optional text scanning happens on-device; images are never stored • Optional app lock FluencyCalc computes the numbers; interpretation always belongs to the educator. It includes no published leveled passages and no norm tables: you bring your own materials and targets. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is in-app purchases: Cosmo Teacher at none against FluencyCalc's 3. Cosmo Teacher also leads on ratings volume (34 vs 4) and iOS requirement (15.0 vs 17.0). FluencyCalc's advantage is rating (5.0 vs 4.6) and update cadence (every 2 weeks vs every 5 weeks). 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
Both are free to download. FluencyCalc sells 3 in-app purchases, starting at $1.99 per month. Cosmo Teacher asks for nothing beyond the download.
FluencyCalc holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Cosmo Teacher has 34 ratings behind it against 4, so its average is the more settled of the two.
Cosmo Teacher ships an update every 5 weeks, FluencyCalc every 2 weeks. The most recent releases landed on October 30, 2026 and October 29, 2026 respectively.
| Parameter | Cosmo Teacher | FluencyCalc |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (34 ratings) | 5.0 (4 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | 34 — better | 4 |
| Update frequency | Every 5 weeks | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 15.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 318 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | Algorithm of Learning Inc. | Neobile LLC |
Customer experience
Cosmo Teacher
FluencyCalc
In-app purchases
Cosmo Teacher
No in-app purchases
FluencyCalc
- Monthly$1.991 Month
- Annual$4.991 Year
- Lifetime$9.99
Questions
Is Cosmo Teacher free?
Is FluencyCalc free?
Which has better reviews, Cosmo Teacher or FluencyCalc?
Do Cosmo Teacher or FluencyCalc have ads?
Which is updated more often, Cosmo Teacher or FluencyCalc?
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