Comparison

Reintro vs Phage

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

Head to head
About

Reintro

Features
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Reintroduction is where most low-FODMAP plans stall. Reintro schedules your challenges, captures symptoms in seconds, and builds a tolerance map you can hand to your dietitian. Built with Phase 2 dietitian guidance — calm, clinical, and explainable. No streaks, no shame, no diet hype. — FEATURES — • Finish reintroduction in 6–8 weeks with a guided 9-group schedule: lactose, fructose, sorbitol, mannitol, GOS, and the four fructan groups (wheat, onion, garlic, fruit). • Track real food triggers, not noise — built-in confounder logging for sleep, stress, and cycle so a bad night doesn't poison your results. • Log a dose or symptom in 10 seconds with severity sliders and a Bristol stool picker. • Watch your tolerance map form in real time: pass, fail, inconclusive — with the exact dose days and confounder flags behind every verdict. • Recover gracefully if you miss a dose: one tap inserts an extra washout and shifts the schedule forward. • Share a clinician PDF with your dietitian or doctor — date range, outcomes, symptom trends, confounder summary. • Optional Apple Health integration for sleep and cycle data (read-only). • Calm, capped notifications: morning dose, post-dose check-in, evening wrap-up. Quiet hours honored. — HOW IT WORKS — 1. Pick your pace and choose the symptoms you want to track. 2. Follow your daily Challenge Card: today's dose, washout, or rest. 3. Watch your tolerance map fill in. Export a PDF when you meet your dietitian. Reintro is for the person already doing the work who just wants the protocol to make sense. It is not a generic food diary, not a calorie counter, and not a barcode scanner. It is the tool that gets you through Phase 2 with a result you can act on. Start your reintroduction with clarity. Free 7-day trial. Payment will be charged to your Apple ID at confirmation of purchase. Subscription automatically renews unless auto-renew is turned off at least 24 Payment will be charged to your Apple ID at confirmation of purchase. Subscription automatically renews unless auto-renew is turned off at least 24 hours before the end of the current period. Your account will be charged for renewal within 24 hours hours before the end of the current period. Your account will be charged for renewal within 24 hours prior to the end of the current period. You can manage and cancel your subscriptions in your Account Settings on the App Store after purchase. Any unused portion of a free trial is forfeited when purchasing a subscription. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://BigBalli.com/privacy

About

Phage

Features
Read full description

Phage es la app que une a personas con problemas digestivos crónicos y su nutricionista clínico. Diseñada para pacientes con SIBO, síndrome del intestino irritable (SII), enfermedad de Crohn y colitis ulcerosa, te ayuda a entender lo que pasa en tu cuerpo y a ganar control sobre tu día a día. CÓMO FUNCIONA PHAGE 1. Tu nutricionista realiza tu entrevista clínica completa y diseña un plan adaptado a tu patología, fase y tolerancias. 2. Recibes acceso a la app con tu plan nutricional, tu diario digestivo y contenido educativo personalizado. 3. Registras tus comidas, síntomas y estado a lo largo del día. La app aprende contigo qué te sienta bien y qué no. 4. Cada dos semanas tienes una videollamada con tu nutricionista para ajustar el plan en base a tus datos reales. QUÉ ENCONTRARÁS EN PHAGE · Diario digestivo simple y rápido — registra alimentos, síntomas y bienestar con menos fricción que escribir en una libreta. · Tu plan de alimentación personalizado, accesible siempre desde el bolsillo. · Píldoras educativas basadas en evidencia científica, filtradas según tu patología: cómo funciona el complejo motor migratorio si tienes SIBO, por qué el estrés impacta tu intestino si tienes SII, cómo la vitamina D influye en Crohn, etc. · Chat directo con tu nutricionista entre revisiones para resolver dudas concretas sin esperar a la próxima cita. · Tu progreso visualizado: rachas de registro, patrones de tolerancia, tendencias semanales. PARA QUIÉN ES PHAGE Phage está pensada para personas con un diagnóstico digestivo confirmado o en proceso, que quieren un acompañamiento profesional continuo y no se conforman con consejos genéricos. Es una herramienta clínica, no una app de wellness ni una dieta de moda. LO QUE NO ES PHAGE Phage no es una app de pérdida de peso. No muestra calorías ni macronutrientes al paciente. No prescribe tratamientos. No reemplaza el consejo médico profesional. Toda recomendación nutricional la diseña y supervisa un nutricionista clínico humano. EVIDENCIA CIENTÍFICA El contenido educativo de Phage está basado en literatura científica actualizada (publicaciones de PubMed sobre SIBO, SII, EII y nutrición digestiva). La inteligencia artificial integrada ayuda al nutricionista, no le sustituye. PRIVACIDAD Y SEGURIDAD Tus datos clínicos están cifrados y protegidos. Solo tú y tu nutricionista tenéis acceso a ellos. Phage cumple el RGPD y los estándares europeos de protección de datos sanitarios. EMPIEZA HOY Phage requiere que primero realices una entrevista clínica con tu nutricionista en phageapp.com. Una vez creado tu plan, recibirás tus credenciales por email para acceder a la app. AVISO MÉDICO Phage es una herramienta de apoyo nutricional y no sustituye el consejo, diagnóstico o tratamiento médico profesional. Consulta siempre con tu médico o profesional sanitario antes de tomar decisiones sobre tu salud o de hacer cualquier cambio en tu tratamiento. Ante una urgencia médica, acude a tu centro de salud o servicio de emergencias.

Screenshots

Reintro3 screens
Phage4 screens

Verdict

The call

The clearest difference is in-app purchases: Phage at none against Reintro's 3. Phage also leads on update cadence (fortnightly vs monthly) and iOS requirement (15.1 vs 18.0). 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. Reintro sells 3 in-app purchases, starting at $9.99 per month. Phage asks for nothing beyond the download.

UpkeepUpdate frequency

Reintro ships an update monthly, Phage fortnightly. Both last shipped on October 31, 2026.

Scorecard3 real differences · 3 level
Reintro versus Phage: the parameters behind the verdict, then further details
ParameterReintroPhage
PriceFreeFree
Update frequencyMonthlyFortnightly — better
AdsNoNo
In-app purchasesYesNo — better
DevicesiPhone, iPadiPhone, iPod
Requires iOS18.015.1 — better
Further details — not scored
Size173 MB39 MB
Age rating4+12+
DeveloperBigBalli Consulting llcJOSE LUIS BARRANCO AGUILERA

In-app purchases

3 purchases

Reintro

Subscriptions2
  • Monthly$9.991 Month
  • Yearly7 Days trial$39.991 Year
One-time1
  • Lifetime$59.99
None

Phage

No in-app purchases

Questions

Is Reintro free?
Reintro is free to download, with in-app purchases available.
Is Phage free?
Phage is free to download, with no in-app purchases.
Do Reintro or Phage have ads?
Neither Reintro nor Phage shows ads.
Which is updated more often, Reintro or Phage?
Reintro ships an update monthly, and Phage fortnightly. Most recently, Reintro was updated on October 31, 2026 and Phage on October 31, 2026.

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