Comparison

TallyFlex vs Kestrel ABA

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

Head to head
About

TallyFlex

This app replaces paper data sheets for behavioral data collection. It helps professionals like BCBAs and RBTs work faster and more accurately with clients in clinics, schools, and homes. It offers various tracking methods and secure data export for reports.

Highlights
  • Replace paper data sheets
  • Track ABC data, frequency, duration, latency
  • Automatic timers for interval recording
  • Task analysis and prompt codes
  • Track multiple behaviors simultaneously
  • Export data to PDF, CSV, XLSX
  • Works offline
Features
Read full description

Collect behavior and skill data, review progress, and prepare reports in one app. TallyFlex brings behavior and skill data, progress graphs, session notes, and reports together for BCBAs, RBTs, special education teachers, and other professionals. Collect during the session Track behavior and skills with frequency, duration, latency, percent correct, interval recording, and momentary time sampling. Record ABC data, break skills into task-analysis steps, and document prompt levels. Review session details Review a session’s collected data, graph, recorded events, and saved notes in one service record. Expand the event timeline to follow the sequence of recorded events. Follow progress over time Review progress graphs and add annotations for changes such as staffing or schedule updates. Organize programs into phases and targets to keep the skills you are working on connected. Bring clear reports to your next review Create PDF reports with graphs and summaries. Review session notes in a Notes Only report, or combine a day's service records, data summaries, timeline events, and notes in a Daily report. Export raw data to CSV or Excel. The Free plan includes core data collection, session notes, and basic CSV and Excel export. Programs, task analysis, prompt levels, full session timelines, and PDF reports require a paid subscription. Solo is a subscription for individual use, available through in-app purchase. Start collecting with TallyFlex. Questions? support@tallyflex.com Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Kestrel ABA

Read full description

Kestrel watches the payers you bill so you don't have to. For BCBAs and ABA clinic owners, a single quiet change to a Medicaid or commercial payer's policy — a new prior-authorization requirement, a revised fee schedule, a modifier rule, a change to covered CPT codes — can mean denied claims, failed audits, and lost revenue. These changes are buried in hundreds of provider manuals, bulletins, and fee schedules across all 50 states. Nobody has time to check them all. Kestrel does it for you, every day. WHAT KESTREL DOES • Monitors official Medicaid and commercial payer policy documents nationwide — provider manuals, bulletins, fee schedules, and coverage policies for ABA services. • Detects the moment a rule that affects ABA billing actually changes. • Sends a clear, plain-English alert: what changed, what it means for how you bill, the effective date, and a link to the source document. BUILT FOR HOW YOU WORK • Follow only the payers and states you care about — your alerts are scoped to your caseload. • Severity that respects your time: urgent billing changes notify you immediately; everything else arrives in a single daily digest. No noise. • Every alert is grounded in the source, linking straight to the official document so you can verify before you act. ASK KESTREL • Have a question about a payer's ABA policy? Ask in plain English and get an answer with citations to the exact documents — prior-auth rules, unit limits, covered codes, telehealth policies, and more. • If your payers' documents don't cover it, Kestrel says so instead of guessing. WHO IT'S FOR Board Certified Behavior Analysts (BCBAs), ABA clinic owners and administrators, and billing teams responsible for keeping a practice compliant and paid. SUBSCRIPTION Kestrel Pro is an auto-renewable subscription — $14.99/month, with a 3-day free trial. It unlocks unlimited alerts, full payer and state coverage, and Ask Kestrel. Payment is charged to your Apple ID at confirmation of purchase. The subscription renews automatically unless canceled at least 24 hours before the end of the current period; you can manage or cancel anytime in your Apple ID settings. Terms of Use (EULA): https://kestrel-api-hl28.onrender.com/legal/terms Privacy Policy: https://kestrel-api-hl28.onrender.com/legal/privacy Kestrel is an information and monitoring tool. It does not provide legal, billing, or coding advice, and it is not affiliated with any payer or government agency. Always verify against the official source before making billing decisions.

Screenshots

TallyFlex4 screens
Kestrel ABA4 screens

Verdict

The call

The clearest difference is device support: TallyFlex at 3 against Kestrel ABA's 1. On price, update cadence, ads and in-app purchases 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. TallyFlex sells 2 in-app purchases, starting at $27.99 per month and Kestrel ABA sells 1 in-app purchase, starting at $14.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

TallyFlex ships an update every 10 days, Kestrel ABA every 6 days. The most recent releases landed on October 12, 2026 and September 25, 2026 respectively.

Scorecard1 real difference · 9 level
TallyFlex versus Kestrel ABA: the parameters behind the verdict, then further details
ParameterTallyFlexKestrel ABA
PriceFreeFree
Rating4.3 (87 ratings) — better—
Positive reviews64.1% of reviews—
Number of ratings87 — better—
Update frequencyEvery 10 daysEvery 6 days — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS15.0 — better16.4
Further details — not scored
Size87 MB64 MB
Age rating4+4+
DeveloperTallyFlex LLCNathan Simmons

Bugs and requests

TallyFlex

Reported bugs

13 issues
  • Calendar not showing current sessions
  • Data export results in empty Excel sheet
  • Calculations and percentages are unreliable
  • Data stops being counted after a certain number of opportunities
  • Exported data format for duration is hard to graph
Show 8 more
  • Recent update messed up client info
  • Data not transferring when emailed
  • Feature to see current sessions in 'today' tab stopped working
  • Account verification email not received
  • App stuck on email verification screen
  • Account temporarily disabled
  • Cannot add students on free version
  • Cannot upgrade account

Requested features

27 requests
  • Offer a 'lite' subscription for SLPAs/BCaBAs
  • Add more data collection options/types (chaining, TAs, checklists)
  • Allow uploading pre-made data sheets
  • Add sound alerts for timers
  • Ability to re-organize behaviors on screens
Show 22 more
  • Track exemplars
  • Add sub-goals under main goals
  • Cold probe button/data collection
  • Shared sessions/collaborative data collection
  • Ability to add multiple students in one session
  • Add prompts needed for a correct response
  • macOS app that syncs
  • Ability to add other team members for consistency
  • Printable daily reports
  • More descriptive session names or notes
  • Export to CSV or Google Sheets
  • Export raw data and graph
  • Prompt required tracking
  • Add descriptions to behaviors and option to show/hide
  • Go back to list of behaviors and add current behaviors during session
  • Website for help and learning
  • Easier way to export data with graphs
  • Time-stamped keystrokes for individual bouts
  • Break down sessions further if needed
  • Export qualitative notes
  • Export session duration with time
  • Shared location for a single student

Kestrel ABA

Not enough reviews yet to summarise bugs or requests.

In-app purchases

2 purchases

TallyFlex

Subscriptions2
  • TallyFlex Solo Monthly$27.991 Month
  • Solo Yearly$279.991 Year
1 purchases

Kestrel ABA

Subscriptions1
  • Kestrel Pro3 Days trial$14.991 Month

Questions

Is TallyFlex free?
TallyFlex is free to download, with in-app purchases available.
Is Kestrel ABA free?
Kestrel ABA is free to download, with in-app purchases available.
Do TallyFlex or Kestrel ABA have ads?
Neither TallyFlex nor Kestrel ABA shows ads.
Which is updated more often, TallyFlex or Kestrel ABA?
TallyFlex ships an update every 10 days, and Kestrel ABA every 6 days. Most recently, TallyFlex was updated on October 12, 2026 and Kestrel ABA on September 25, 2026.

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