Para você que fez o Jailbreak do seu iPhone, essa post lhe ajudará a incluir no Cydia o endereço de vários repositórios de aplicativos, nesses endereços é que se encontram diversos aplicativos que foram reprovados pela Apple, mas que são muito bons e ajudam no dia a dia, muitos deles gratuítos 
.
Para adicionar as Sources faça o seguinte caminho:
- Abra o Cydia;
- Clique na opção “Manage“;
- Clique em “Sources“;
- Acima ao lado direto clique na opção “Edit“;
- Agora ao lado esquerdo clique em “Add”
- Digite o endereço do repositório e depois “Add Source“.
Essa é a tela de Sources do Cydia, a opção Edit ao lado direto da tela.
Onde conseguir os Sources?
Abaixo uma pequena lista:
A-steriods: https://a-steroids.com/cydia
apt9.yellowsn0w.com: https://apt9.yellowsn0w.com/
BigBoss & Planet-iPhones: https://apt.bigboss.us.com/repofiles/cydia/
cake.mapleidea.com: https://cake.mapleidea.com/cydia/
david.ashman.com: https://david.ashman.com/apt/
EasyWakeup.net: https://easywakeup.net/repo/
Hack&Dev: https://iphone.hackndev.org/apt/
HackThatiFone: https://hackthatifone.com/htif/apt/
HVKLS: http://hvkls.dyndns.org/downloads/debian/
i.danstaface.net: https://i.danstaface.net/deb/
iAcces: https://www.iacces.com/apt/
iClarified: http://cydia.iclarified.com/
iFoneTec: https://app.ifonetec.com/cydia/
iMobileCinema: https://d.imobilecinema.com/
iSpazio: https://www.ispaziorepo.com/cydia/apt/
MacCiti: https://macciti.com/cydia/
ModMyi.com: https://apt.modmyi.com/
namedfork.net: https://apt.namedfork.net/iphone/
Niklas Schroder: https://apt.paperclipsandscrambledeggs.com/
PwnCenter: https://apt.pwncenter.com/
Ranbee: https://ranbee.com/repo
RichCreations: https://www.richcreations.com/iphone/apt/
RupertGee: https://redwolfberry.com/rupertgee/cydia/
SaladSoft: https://nickplee.com/cydiasource/
Sleepers.net: https://repo.sleepers.net/cydia/
Ste Packaging: https://repo.smxy.org/cydia/apt/
Steffwiz: Now part of PwnCenter Source
Telesphoreo Tangelo: https://apt.saurik.com/
Touch-Mania (aleman): https://cydia.touch-mania.com/
UrbanFanatics.com: https://urbanfanatics.com/cydia/
ZodTTD: https://www.zodttd.com/repo/cydia/
xSellize:http://xsellize.com/cydia/