Comparison

Cosmo Teacher vs FluencyCalc

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

Head to head
About

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.

Highlights
  • Check bookings
  • Reschedule classes
  • Cancel classes
  • Update schedule
  • Prepare for classes
Read full description

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.

About

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.

Highlights
  • 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
Features
Read full description

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

Cosmo Teacher4 screens
FluencyCalc4 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

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.

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

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.

Scorecard6 real differences · 4 level
Cosmo Teacher versus FluencyCalc: the parameters behind the verdict, then further details
ParameterCosmo TeacherFluencyCalc
PriceFreeFree
Rating4.6 (34 ratings)5.0 (4 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings34 — better4
Update frequencyEvery 5 weeksEvery 2 weeks — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPodiPhone, iPad
Requires iOS15.0 — better17.0
Further details — not scored
Size318 MB2 MB
Age rating4+4+
DeveloperAlgorithm of Learning Inc.Neobile LLC

Customer experience

Cosmo Teacher

All ratings34 ratings
Positive91.2%
Neutral2.9%
Negative5.9%

FluencyCalc

All ratings4 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Cosmo Teacher

No in-app purchases

3 purchases

FluencyCalc

Subscriptions2
  • Monthly$1.991 Month
  • Annual$4.991 Year
One-time1
  • Lifetime$9.99

Questions

Is Cosmo Teacher free?
Cosmo Teacher is free to download, with no in-app purchases.
Is FluencyCalc free?
FluencyCalc is free to download, with in-app purchases available.
Which has better reviews, Cosmo Teacher or FluencyCalc?
FluencyCalc is rated higher. Cosmo Teacher averages 4.6 out of 5 from 34 ratings, while FluencyCalc averages 5.0 from 4 ratings.
Do Cosmo Teacher or FluencyCalc have ads?
Neither Cosmo Teacher nor FluencyCalc shows ads.
Which is updated more often, Cosmo Teacher or FluencyCalc?
Cosmo Teacher ships an update every 5 weeks, and FluencyCalc every 2 weeks. Most recently, Cosmo Teacher was updated on October 30, 2026 and FluencyCalc on October 29, 2026.

Other comparisons